'Otherworldly' crash site discovered on surface of Mars by NASA helicopter

Sinead Butler

An "otherwordly" crash site of another spacecraft was photographed by a NASA helicopter.

Back in 2020, the Perseverance Rover was sent up to the Red Planet with the Mars Helicopter called Ingenuity strapped to the bottom of it.

The initial plan was for Ingenuity - otherwise known as Ginny - to make no more than five test flights within 30 days but in the end, the aircraft surpassed expectations when it completed 72 flights between April 2021 and January 2024.

It's more impressive when you consider the fact that the helicopter was just half a meter (1.6 feet) tall and weighed less than two kilograms (four pounds).

As the first aircraft to successfully complete a powered, controlled flight on another planet, the purpose of the flights was to explore parts of Mars that couldn't be reached by the Perseverance rover.

NASA/JPL-Caltech

One of the notable aerial images was captured in 2022 when the helicopter took photos of debris on the dusty, cold, desert.

"There's definitely a sci-fi element to it. It exudes otherworldly, doesn't it?" Ian Clark, a Perseverance parachute system engineer, told The New York Times.

“They say a picture's worth 1,000 words, but it's also worth an infinite amount of engineering understanding.”

But before you go and make assumptions that Martians or alien life were responsible for the wreckage, this wasn't the case but rather was the result of us humans.

So what was the debris?

Basically, it was landing equipment used to help Ingenuity and the Peersererance Rover land on the surface of Mars in 2021.

In the photos, you can see the upright backshell and the debris which is thought to have impacted the surface at about 78 mph (126 kph).

“The backshell’s protective coating appears to have remained intact during Mars atmospheric entry. Many of the 80 high-strength suspension lines connecting the backshell to the parachute are visible and also appear intact," the space agency said.

“Spread out and covered in dust, only about a third of the orange-and-white parachute - at 70.5 feet (21.5 meters) wide, it was the biggest ever deployed on Mars - can be seen, but the canopy shows no signs of damage from the supersonic airflow during inflation.”

{ https://www.indy100.com/ }

12-11-2024 om 17:28 geschreven door peter  

While concepts for an interstellar spacecraft go back to the early Space Age, interest in the field has grown considerably in the past two decades. This is largely due to the recent explosion in the number of known exoplanets in our galaxy, which currently stands at 5,787 confirmed planets in 4,325 star systems. This is illustrated by concepts like Breakthrough Starshot, Swarming Proxima Centauri, and the Genesis Project. These concepts leverage gram-scale spacecraft, directed energy (lasers), and lightsails to achieve speeds of up to 20% of the speed of light, allowing them to make the journey in decades rather than centuries or millennia.

However, sending crewed spacecraft to other star systems with enough passengers to settle on another planet is far more challenging. As addressed in a previous article, a spacecraft relying on known or technically feasible propulsion methods would take between 1,000 and 81,000 years to reach even the nearest star (Proxima Centauri). While some advanced concepts like Project Orion, Daedalus, and Icarus could theoretically reach Proxima Centauri in 36 to 85 years, the costs and amount of propellant needed are prohibitive.

The alternative to these “go fast” concepts is to settle in for the long ride, which may last centuries or even millennia. This necessitates a spacecraft of sufficient size capable of accommodating hundreds (or thousands) of human beings over multiple generations. To save room and reduce the mass of cargo space, the crews will need to grow much of their food and rely on life support systems that are bioregenerative in nature. In short, the ship would need to be self-sustaining so the passengers could live comfortable, healthy lives until they reached their destination.

Andreas Hein, an Associate Professor of Aerospace Engineering at the University of Luxembourg and the Chief Scientist at the Interdisciplinary Centre for Security, Reliability and Trust, is part of the Hyperion Project’s Organizing Committee. As he told Universe Today via email:

“Think about the difference between a drone and an ocean liner. Previous designs for interstellar spacecraft, such as Orion, Daedalus, and Icarus, focused on uncrewed probes with the primary objective of gathering scientific data from target star systems, including searching for signs of life. In contrast, generation ships are designed to transport a crew, with the primary goal of settling an exoplanet or other celestial body in the target star system. They also tend to be much larger than interstellar probes, though they would likely use similar propulsion systems, such as fusion-based propulsion.”

Generation Ships

The first known description of a generation ship was made by rocketry engineer Robert H. Goddard, one of the “forefathers of modern rocketry,” for whom NASA’s Goddard Space Flight Center is named. In his 1918 essay, “The Ultimate Migration,” he described an “interstellar ark” leaving the Solar System in the distant future after the Sun reached the end of its life cycle. The passengers would cryogenically frozen or in a state of induced torpor for much of the journey except for the pilot, who would be awakened periodically to steer the ship.

Goddard recommended that the ship be powered by atomic energy if the technology were realized. If not, a combination of hydrogen, oxygen, and solar energy would suffice. Goddard calculated that these power sources would allow the vessel to achieve velocities of 4.8 to 16 km/s (3 to 10 mi/s), or roughly 57,936 km/h (36,000 mph). This was followed by famed Russian rocket scientist and cosmologist Konstantin E. Tsiolkovsky, also recognized as one of the “forefathers of modern rocketry.” In 1928, he wrote an essay titled “The Future of Earth and Mankind” that described an interstellar “Noah’s Ark.”

In Tsiolkovsky’s version, the spaceship would be self-sufficient, and the crew would be awake for the journey, which would last for thousands of years. In 1964, NASA scientist Dr. Robert Enzmann proposed the most detailed concept to date for a generation ship, known as an “Enzmann Starship.“ The proposal called for a ship measuring 600 meters (2,000 feet) in length powered by a fusion thruster that uses deuterium as a propellant. According to Enzmann, this ship would house an initial crew of 200 people with room for expansion along the way.

In recent years, the concept has been explored from various angles, from biological and psychological to ethical. This included a series of studies (2017-2019) conducted by Dr. Frederic Marin of the Astronomical Observatory of Strasbourg using tailor-made numerical software (called HERITAGE). In the first two studies, Dr. Marin and colleagues conducted simulations that showed that a minimum crew of 98 (max. 500) would need to be coupled with a cryogenic bank of sperm, eggs, and embryos to ensure genetic diversity and good health upon arrival.

In the third study, Dr. Marin and another group of scientists determined that the ship carrying them would need to measure 320 meters (1050 feet) in length, 224 meters (735 feet) in radius, and contain 450 m² (~4,850 ft²) of artificial land to grow enough food to sustain them. In short, these proposals and studies establish that a generation ship and its crew must bring “Earth with them” and rely on bioregenerative systems to replenish their food, water, and air throughout generations.

As noted, most studies regarding interstellar exploration have focused on probes or ships and tended to emphasize speed over ensuring passengers could make the journey. As Hein explained, this makes the Hyperion Project the first competition to focus on generation ships and ensuring the interstellar voyagers remain healthy and safe until they arrive in a nearby star system:

“This competition is unprecedented—a true first. To our knowledge, it marks the first time a design competition specifically focused on generation ships has been launched. It builds on our team’s prior research, conducted since 2011, which addresses fundamental questions such as the required population size. This competition uniquely explores the complex interplay between generation ship technologies and the dynamics of a highly resource-constrained society.

“Most studies have focused on the technological aspects, such as propulsion and life support, while often treating the ship’s technology and onboard society as separate issues. This approach is understandable given the challenge of analyzing these interdependencies. We even got the advice to stay away. Our goal is to take an initial step toward exploring and envisioning these interdependencies. We aim to be Cayley instead of Da Vinci. Da Vinci imagined aircraft, but Cayley conceived their basic design principles, which paved the way for the Wright Brothers.”

The Competition

Registration for the competition will remain open until December 15th, 2024, and all participating teams must pay a $20 registration fee. The top three winning entries will be announced on June 2nd, 2025, and awarded $5000 for first place, $3000 for second, and $2000 for third. In addition, ten teams will receive honorary mentions for creative and innovative ideas. For more information, check out Project Hyperion’s website and the Mission Brief.

Per their mission statement, Project Hyperion is a preliminary study and feasibility assessment for crewed interstellar flight using current and near-future technologies. The goal is to inform the public about the future possibility of interstellar space travel and to guide future research and technology development. As they state on their website, the competition has the following theme:

“Humanity has overcome the great sustainability crisis in the 21st century and has transitioned into an era of sustainable abundance, both on Earth and in space. Humanity has now reached the capacity to develop a generation ship without major sacrifices. An Interstellar Starship flies by an icy planet in a nearby solar system. Going beyond the classical examination of the problem of Interstellar propulsion and structural design for a voyage lasting multiple centuries, what might be the ideal type of habitat architecture and society in order to ensure a successful trip?”

Participants will be tasked with designing the ship, its habitat, and its subsystems, including details on its architecture and society. The Project Brief describes other important Boundary Conditions, including the duration of the mission, its destination, and other important considerations. The mission duration is 250 years from launch to arrival at the target star system, consistent with the ship having advanced propulsion capable of achieving a fraction of the speed of light.

To ensure the health and safety of the crew, the ship’s habitat must have atmospheric conditions similar to Earth, protection from galactic rays, micrometeorites, and interstellar dust (necessary for relativistic space travel). The ship must also provide artificial gravity via rotating sections, but “parts of the habitat can have reduced gravity.” The habitat must also provide accommodation and decent living conditions for 1000 plus or minus 500 people throughout the trip. The habitat will also need to be designed in such a way that it can be modified to meet changing needs.

The society’s structure must allow for cultural variations, including language, ethics, family structure, beliefs, aesthetics, family structure, and other social factors. The competition also considers knowledge retention and loss relative to Earth, which they describe as “almost inevitable.” Cameron Smith, an anthropologist at Portland State University and the University of Arizona’s Center for Human Space Exploration (CHaSE), is also a member of Project Hyperion’s Organizing Committee. As he explained to Universe Today:

“[T]he situation of a population, let’s say thousands or even 1500 people, traveling in isolation for centuries would be unique to the human experience. So just as we plan for the health of the architecture and the hardware, maintaining them to keep them in a good state over this time span, we can plan for the health and maintenance of both biology and culture. And we have an excellent guide which is evolution.

“Evolution is at the heart of all life sciences, and it also, in many ways, applies to cultural change through time. Biology evolves, and cultures evolve. And we have learned how to manage our cultures on Earth to fit a wide variety of situations.”

“The idea, however, is to get people thinking about how culture might be adjusted for the unusual conditions I’ve outlined. Separation from Earth, separation from other populations of humans, except by radio or video communication – which will become less and less as they get farther from Earth – what could change through time of the voyage that would require cultural adjustment?”

Throughout the trip, the population must also have access to basic products (clothing, shelter, etc.). The mass of the habitat is to be as low as possible, reliable over the entire duration of the journey, and include redundant systems. The generation ship’s target destination is a rocky planet in a nearby star system (like Proxima b). In an interesting twist, the competition stresses that this planet will have an artificial ecosystem created by a precursor probe, à la Project Genesis. As a result, the crews will not require any significant genetic or biological adaptations to survive in that ecosystem. As Hein explained:

“250 years in a tin can and staying happy, aka. can a society thrive in a severely resource-constrained environment? Answering this question is essential for designing a generation ship and may also offer insights into sustainable futures on Earth. From my perspective, there has been a significant lack of imaginative solutions to this challenge.’250 years in a tin can and staying happy, aka, can a society thrive in a severely resource-constrained environment?’

“Answering this question is essential for designing a generation ship and may also offer insights into sustainable futures on Earth. From my perspective, there has been a significant lack of imaginative solutions to this challenge.”

“We also hope to raise awareness of the complexities underlying today’s technologies. Which technologies could or should be preserved on a generation ship, and which may be lost? Research shows that a society’s population size affects the diversity and complexity of its technologies. Most modern technologies require intricate supply chains involving numerous companies, infrastructure, and regulatory systems. Therefore, a generation ship will likely rely on low-tech solutions unless disruptive technologies, like molecular manufacturing or Standard Template Constructs (as depicted in Warhammer 40k), become feasible.”

An Interdisciplinary Approach

A major focus of the competition is interdisciplinary research, reflective of the organizing committee itself. This has become a trend in space research, thanks in large part to the rise of the commercial space industry. For many companies and non-profits today, traditional research is expanding beyond aerospace engineering and incorporating architecture and interior design, biology, sociology, psychology, agriculture, and other disciplines to create concepts that will allow for healthy and sustainable living in space.

Per the rules, teams must consist of at least one architectural designer, engineer, and social scientist (a sociologist, anthropologist, etc.). As Yazgi Demirbas Pech, an architect and designer with the Organizing Committee, explained:

“We hope this competition will inspire greater interdisciplinary collaboration, emphasizing the value of fields such as architecture and social sciences—especially critical in planning for long-duration, long-distance missions. A holistic approach that integrates these diverse fields can contribute to more sustainable and human-centered solutions for space exploration.

“Unlike traditional architectural practices on Earth, space architecture requires a delicate balance between strict technical constraints—such as limited physical space, extreme environmental conditions, and restricted resources—and the essential human needs for comfort, safety, and psychological well-being. Here, architecture becomes a life-sustaining element, enabling people to live, work, and thrive across vast distances and timescales.

“Through this competition, we invite teams to challenge conventional design principles and redefine what “home” means among the stars. Including architects or architecture students on teams will undoubtedly add fresh perspectives to this thought-provoking competition.”

Solving for Space Solves for Earth

Another important aspect of the competition is the desire to inspire ideas that will also have applications and benefits here on Earth. This is another crucial aspect of the future of space exploration, which includes plans for creating outposts on the Moon, Mars, and beyond. Like a generation ship, missions operating farther from Earth cannot rely on regular resupply missions sent from Earth. This means that habitats must be as self-sufficient as possible and ensure that inhabitants have enough air, water, and food to live comfortably.

For decades, scientists and planners have looked to Earth’s natural environment for inspiration. This was the purpose of the Biosphere 2 project, which conducted two experiments between 1991 and 1994 in which volunteers lived in a sealed biome that mimics Earth’s many environments. Since 2007, the University of Arizona has used the facility to conduct research through its CHaSE program while remaining open to the public.

“Since the 1990s, [Biosphere 2] has been a research center for closed ecosystems as though on a starship, and the research here continues. [I am] actually residing at the biosphere until January, and I am looking at the stars and engaged in all of this right now,” said Smith, who wrote to Universe Today from the facility. As he went on to note, research from this experiment and similar studies have significant applications for life here on Earth, mainly because there is no margin for error in space:

“[T]he planning and preparation going into the starship in terms of its culture and biological protections for the offspring would be very carefully designed to give the greatest protections to them, perhaps in ways more specifically tailored to their survival and good health than in any culture ever on Earth. On the interstellar voyage, things must go just right to survive over multiple generations in the closed ecosystem, so planning and preparation would have to be very thorough.”

Since failure in space often means death, especially when people are stationed far from Earth where rescue missions would take too long to reach them, the technologies future explorers and settlers rely on must be regenerative, fail-proof, and sustainable over time. This research and development will have direct benefits when it comes to the most pressing problems we face here on Earth: climate change, overpopulation, poverty and hunger, and the need for sustainable living. As Pech emphasized:

“I believe that thinking beyond Earth can offer valuable insights into how we might improve life here on ‘spaceship Earth.’ Just as in space, where we face numerous challenges, our planet requires innovative approaches to foster harmony and resilience amidst current global conflicts and challenges.”

There’s also the added benefit of stimulating questions about life in the Universe and where extraterrestrial civilizations (ETCs) could already be traveling among the stars. For decades, scientists have explored these questions as part of the Fermi Paradox. As Hein explained:

“Finally, just as Project Daedalus demonstrated the theoretical feasibility of interstellar travel, we aim to establish a similar ‘existence proof’ for human travel to the stars. Achieving this will add new perspectives to the Fermi Paradox: if we can envision crewed interstellar travel today, a more advanced civilization should have achieved it already. So, where are they?”

Those interested in the competition or have more questions are encouraged to contact the Initiative for Interstellar Studies at info@i4is.org. The i4is will remain open to Q&A until December 1st, 2024.

Further Reading: 

• Project Hyperion

{ https://www.universetoday.com/ }

12-11-2024 om 16:43 geschreven door peter  

Uranus mystery is SOLVED after 38 years - and it suggests the planet isn't as weird as we thought

• READ MORE: Uranus' moon could harbour extraterrestrials, scientists say 

By SHIVALI BEST FOR MAILONLINE 

Uranus is often regarded as the weirdest planet in our solar system.

But a new study suggests that the gas giant may not actually be as strange as we thought.

Researchers from University College London (UCL) say that the mysteries surrounding Uranus may have been the result of an unusually powerful solar storm that happened to occur just as a spacecraft visited the planet.

That spacecraft – NASA's Voyager 2 – flew by Uranus back in 1986 and provided the first close glimpse of the planet.

And since then, no spacecraft has been back.

'Almost everything we know about Uranus is based on Voyager 2's two-day flyby,' said co-author Dr William Dunn.

'This new study shows that a lot of the planet's bizarre behaviour can be explained by the scale of the space weather event that occurred during that visit.'

Based on the findings, the researchers are calling for a return mission to Uranus to find out what it's really like when not in the midst of a solar storm.

Uranus is often regarded as the weirdest planet in our solar system. But a new study suggests that the gas giant may not actually be as strange as we thought

Researchers from University College London (UCL) say that the mysteries surrounding Uranus may have been the result of an unusually powerful solar storm that happened to occur just as a spacecraft visited the planet

In January 1986, NASA's Voyager 2 became the first, and so far the only, spacecraft to explore Uranus.

The mission snapped the first images of Uranus – but also discovered several oddities.

Uranus' radiation belts were found to be incredibly intense, while its magnetosphere was nearly empty of plasma.

This meant that there was no apparent source of charged particles to feed those intense belts.

In their new study, the researchers found that a 'hurricane' of extreme solar weather could explain this result.

The hurricane likely squashed Uranus' magnetosphere, pushing plasma out of it and intensifying radiation belts by feeding electrons into them.

And Uranus itself wasn't the only celestial object affected by this event.

Uranus' five moons were long assumed to be dead worlds because of the planet's nearly empty magnetosphere.

NASA's Voyager 2 snapped the first images of Uranus – but also discovered several oddities. Uranus' radiation belts were found to be incredibly intense, while its magnetosphere was nearly empty of plasma. This meant that there was no apparent source of charged particles to feed those belts

But the new findings suggest that the moons could be geologically active after all - and may even have oceans.

'If Voyager 2 had arrived just a few days earlier, it would have observed a completely different magnetosphere at Uranus,' said Dr Jamie Jasinski of NASA's Jet Propulsion Laboratory (JPL), who led the study.

'The spacecraft saw Uranus in conditions that only occur about 4% of the time.'

Based on the findings, the researchers are calling for a new – and carefully considered - mission to Uranus.

'We now know even less than we thought about what a typical day in the Uranian system might look like and are even more in need of a second spacecraft to visit to truly understand this mysterious, icy world,' Dr Dunn said.

'A big piece of evidence against there being oceans on Uranus's moons was the lack of detection of any water-related particles around the planet – Voyager 2 didn't find water ions.

'But now we can explain that: the solar storm basically would have blown all that material away.

'The design of the upcoming NASA flagship mission to Uranus should be carefully considered in the context of these findings.

'For instance, we might want instruments that could detect nudges to the magnetic field from a moon's salty ocean and instruments that could measure all the particles in the system to test whether we find water or other important material from the moons.'

HOW DOES URANUS'S MAGNETIC FIELD COMPARE TO EARTH'S?

A study analysing data collected more than 30 years ago by the Voyager 2 spacecraft has found that the Uranus's global magnetosphere is nothing like Earth’s, which is known to be aligned nearly with our planet’s spin axis.

A false-color view of Uranus captured by Hubble is pictured 

According to the researchers from Georgia Institute of Technology, this alignment would give rise to behaviour that is vastly different from what’s seen around Earth.

Uranus lies and rotates on its side, leaving its magnetic field tilted 60 degrees from its axis.

As a result, the magnetic field ‘tumbles’ asymmetrically relative to the solar wind.

As a result, the magnetic field ‘tumbles’ asymmetrically relative to the solar wind.

When the magnetosphere is open, it allows solar wind to flow in.

But, when it closes off, it creates a shield against these particles. 

The researchers suspect solar wind reconnection takes place upstream of Uranus’s magnetosphere at different latitudes, causing magnetic flux to close in various parts.

{ https://www.dailymail.co.uk/ }

11-11-2024 om 23:11 geschreven door peter  

America's top city for UFO sightings revealed - and the exact time of day you should watch the skies

By LAUREN ACTON-TAYLOR FOR DAILYMAIL.COM

If you are hoping to spot a UFO zipping across the evening sky, there is one major US city where your chances are highest, new research has revealed.

Phoenix, Arizona, has been ranked as America's supernatural hotspot, with a whopping 323 sightings in the last decade, according data from the National UFO Reporting Center compiled by BetUS. 

New York City came in second place with 313 reported incidents and Nevada, which is home to the infamous Area 51,  came in third with 309 alleged sightings.

While the data only goes as far back as 2013, Phoenix has long been a hotbed of paranormal activity - with its biggest UFO event occurring on March 13, 1997.

The city has earned the number one spot with a whopping 323 sightings in the last decade alone

Phoenix has long been a hotbed of paranormal activity - with its most major, and widespread, account of UFO sightings happening on March 13, 1997

On this date, hundreds of people reported seeing 'The Phoenix Lights'.  

The sightings were so widespread that even a 12-year-old Meghan McCain claiming she saw them - with what she witnessed that night leaving a mark.

After her mom allowed her 'to go out to the yard to take a look', McCain told the DailyMail.com that she saw 'giant, bright objects floating in a straight line in the distance'.

'Even today, it is hard to explain, and there are varying descriptions of what happened over Phoenix between approximately 7:30 pm and 10:30 pm,' she added.

Years later in 2016, locals in Gilbert, just southeast of Phoenix, claimed they had seen a strange set of three lights moving north to south in the East Valley area.

One resident, Todd, shared footage to his X account, writing in the caption: 'Did anybody else just see a UFO!?' 

Even more eerily, in 2019, a live-stream just outside Phoenix captured a purple beam of light bursting through the foreground, and multiple alleged UFOs were caught zipping through the night sky.

In 2019, a live-stream just outside Phoenix captured a purple beam of light burst through the foreground, and multiple UFOs were caught zipping through the night sky

Around 65 percent of Americans believe that intelligent life exists on other planets, according to Pew Research Center. 

The recent BetUS data showed that some of the other top scoring cities for UFO sightings are in close proximity to notorious locations known for suspected alien activity, such as Area 51 or Roswell, New Mexico. 

Roswell had been dubbed the 'UFO capital of the world' and was believed to be near the site of an alleged alien spaceship crash in 1947 known as the 'Roswell Incident'. 

In the same year, the National UFO Reporting Center was founded and it has processed more than 180,000 reports. 

In 2016, locals in Gilbert, just southeast of Phoenix, claimed to see a strange set of three lights moving north to south in the East Valley area

The city is home to the International UFO Museum and Research Center, which has been open for nearly 30 years and hosts an annual UFO Festival. 

Area 51 in Nevada, meanwhile, is one of the most notorious spots for alien conspiracy theories. The site became forever associated with aliens after an interview in 1989. 

Former government physicist, Robert Lazar, told a Las Vegas news station that the site housed and studied alien spacecraft. He has said it was his job to to recreate the technology for military use, according to National Geographic.    

Other top cities for UFO sightings include Portland, Oregon, in fourth place with 279 reports, and Tuscon, Arizona, ranked fifth with 244 . 

Roswell was dubbed the 'UFO capital of the world' following an alleged spaceship crash in 1947 known as the 'Roswell Incident'. Above, a sign directing Roswell, New Mexico visitors to the start of a '1947 UFO Crash Site Tour' circa 1997

Arizona Man gets excited filming 'UFO' sighting in Arizona

A man takes a selfie with his son in front of a sign at the Alien Research Center in Hiko, Nevada on September 21, 2019

Many cities listed were notably large, with more potential eyes looking at the sky and therefore a higher likelihood of a potential sighting. 

On the West Coast, six California cities featured on the list of 200 - with the state's highest ranking held by Los Angeles which came in seventh place with 222 sightings. 

According to the BetUS, July is best time of year to spot a UFO in New York, Ohio, Colorado and Oregon - with the most common time between 9pm and 10pm. 

For states such as California and Arizona, November is reportedly the best month to watch the skies. 

In 2019, potential evidence of alien life was announced by an Oxford research project, Breakthrough Listen, with hints that the proof would eventually be released to the public. 

{ https://www.dailymail.co.uk/ }

11-11-2024 om 18:22 geschreven door peter  

No Star Wars: Claims about Elon Musk and a “UFO fighter jet” are Pants on Fire!

Is Elon Musk preparing for real-life "Star Wars"? 

"Breaking News: Elon Musk unveils UFO fighter jet that defies physics," a Nov. 2 Facebook post said. "The spacecraft, named Ethereon, is said to be equipped with propulsion technology that transcends known aerodynamics, utilizing an anti-gravity drive system based on principles of quantum physics." 

The Facebook post is one of many making the same claim. Each post features a photo of a vessel, likely generated by artificial intelligence, each with a different design. 

(Screenshot of Facebook posts)

The posts earned thousands of likes, and commenters appeared to believe the claim, writing, "An amazing achievement!!!," and, "This is an amazing invention of man." 

Musk is no stranger to social media misinformation. He is the world’s richest man, a close ally of President-elect Donald Trump and the CEO of SpaceX, a rocket company that has had several successful launches into outer space. But viral claims about a gravity-defying fighter jet are invented. 

The Facebook post was flagged as part of Meta’s efforts to combat false news and misinformation on its News Feed. (Read more about our partnership with Meta, which owns Facebook, Threads and Instagram.)

PolitiFact reviewed Nexis news archives and found no reports of Musk "unveiling" a fighter jet created by SpaceX. The "updates" page on SpaceX’s website makes no mention of a new product that fits this description.

A gravity-defying, physics-shattering spaceship with an "infinite energy source" would have made major headlines – but none exist.

We rate the claim that Elon Musk unveiled a UFO fighter jet that defies physics Pants on Fire!

{ https://www.politifact.com/ }

10-11-2024 om 16:43 geschreven door peter  

'God of chaos' asteroid could trigger astroquakes when it skims past Earth on Friday the 13th

• READ MORE:  Inside the mission to meet a 'city-killer' asteroid before it hits Earth

By ELLYN LAPOINTE FOR DAILYMAIL.COM

When the 'God of Chaos' asteroid flies by our planet in five years, Earth's gravity could cause it to experience 'astroquakes,' scientists have predicted. 

Their research suggests that when the asteroid Apophis - named for the Egyptian God of Chaos - passes within just 19,000 miles of Earth, our planet's gravitational pull will cause it to violently shake.

The theoretical shaking could happen due to gravitational tidal forces, which are the stretching or pulling effect on an object caused by the uneven gravitational pull from another massive body.

The team identified two physical processes that could occur. One would cause rocks and dust to fly off the surface, and the other would trigger landslides that would happen gradually over tens of thousands of years. 

Both would ultimately change the surface structure of the four-billion-year-old asteroid.

Apophis, set for the flyby on April 13, 2029, is a 'city-killer' space rock the size of the Empire State Building. 

If it were to hit Earth directly, its impact would be equivalent to detonating tens or hundreds of nuclear bombs, according to The Planetary Society.

It wouldn't destroy the entire Earth, but it could easily annihilate a city, spreading destruction over a radius of hundreds of miles. 

This illustration shows Apophis' size relative to New York City. A direct hit from this asteroid wouldn't destroy the whole Earth, but it could wipe out a major metropolitan area

Scientists have paid close attention to this asteroid's path since it was first discovered in 2004. Initially, the chances of a potential impact in 2029 were relatively high at 2.7 percent.

But more recent studies have found that the odds are closer to one in two billion.   

A team of researchers led by Ronald-Louis Ballouz, an asteroid scientist at the Johns Hopkins University Applied Physics Laboratory, investigated what might happen to Apophis when it passes through Earth's gravitational field. 

Asteroids typically have weathered surfaces because they are constantly bombarded by meteoroids in a process called space weathering, Ballouz told Live Science, but astronomers have long observed space rocks that pass close to planets lack weathered surfaces. 

He suspected that the reason why could be because the planet's gravity removes the outer layer of the asteroid's surface.

To test this, the researchers created a computational models of Apophis and then simulated each model's path to Earth while tracking its physical changes, revealing our planet's gravitational pull could drive two different physical processes on Apophis.

The first is earthquake-like tremors that would likely begin about an hour before the asteroid reaches its closest distance from Earth and continue for some time after.

When Apophis encounters Earth's gravity, it could experience tremors strong enough to lift boulders from its surface and allow some rocks to escape into space, researchers say

It's difficult to say how intense this shaking will be. But Ballouz expects it will be strong enough to change Apophis' outer appearance, lifting boulders from the surface and allowing some rocks to escape into space.

The other process is a change in the asteroid's tumbling. Space rocks like Apophis don't rotate on an axis, as planets do. Rather, they tumble somewhat haphazardly through space. 

Earth's gravitational pull could alter Apophis' tumbling pattern, triggering landslides over the course of tens of thousands of years that could further 'refresh' its surface to reveal the layers beneath. 

Read More

• Earth's ancient APOCALYPSE: Huge comet hit Earth 12,000 years ago - sparking an ice age that decimated humans, expert claims in controversial Netflix series 

The research team's findings are currently available on the arXiv preprint database, and have been accepted for publication in the Planetary Science Journal.  

If Ballouz's hypothesis proves correct, it could explain why other asteroids that have been subjected to planetary gravity don't show signs of space weathering on their surfaces. 

But he and his team won't know for sure until NASA's OSIRIS-APEX mission rendezvous with Apophis during its 2029 flyby. 

This spacecraft will study the asteroid for 18 months to document any physical changes that it endured during its encounter with Earth. 

As for whether Apophis could directly hit Earth anytime soon, research has determined that we're safe for at least the next 100 years, according to the Planetary Society. 

But to prepare for the unlikely event that another 'city-killer' asteroid could collide with Earth, NASA's Planetary Defense Coordination Office is developing ways to deflect or destroy them before they make impact.

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What is the ‘God of Chaos’? New study reveals giant asteroid could hit Earth if…

Asteroid 'God of Chaos' could hit Earth sooner than expected according to experts from NASA

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09-11-2024 om 23:19 geschreven door peter  

China unveils $36mil new stealth jet fighter built with 'stolen American military technology'

• READ MORE: China launches top-secret military spacecraft CSSHQ into orbit

By MATTHEW PHELAN SENIOR SCIENCE REPORTER FOR DAILYMAIL.COM

China has posted the first official photo of its brand 'new' stealth fighter.

But if you feel like you've seen it before, there might be a reason for that.

The J-35A jet is rumored to have been built using 'many terabytes' of stolen US military data.

A decade ago, documents leaked by ex-US intelligence contractor Edward Snowden laid out the case that radar designs, engine schematics and other top secret specs from America's $2 trillion stealth F-35 program had been hacked by Chinese spies. 

Photographed in a three-quarter profile, taxiing on the tarmac, the new J-35A is the land-based sibling to China's equally secretive and stealth J-35, which the emerging superpower plans to deploy from its growing fleet of naval aircraft carriers. 

The image came a week ahead of the fighter's November 12 debut at the China International Aviation & Aerospace Exhibition, held at Zhuhai Airport in Guangdong.

At the time of Snowden's leak, China's Foreign Ministry spokesman Hong Lei told reporters that 'the so-called evidence that has been used to launch groundless accusations against China is completely unjustified.' 

But the similarities between the Chinese and the American jets are striking — both have the same characteristic internal weapons bays to maintain its radar-evading stealth shape and aerodynamic air-intake channels beneath their cockpits.

China posted the first official photo of its J-35A stealth fighter (above) on Tuesday, teasing the debut of a jet that's accused of originating with 'many terabytes' of stolen US military data

'For the first time, new equipment such as the medium-weight, stealth multi-role fighter J-35A, the HQ-19 surface-to-air missile and a new type of reconnaissance and strike unmanned aerial vehicle will be on display,' officials told CCTV state television.

But aside from providing the picture of the J-35A, Chinese military spokesman Colonel Niu Wenbo did not provide further details to CCTV on the new craft.

Both J-35 and J-35A were built off China's FC-31 stealth fighter prototype, which has been unofficially documented for years in leaks and snapshots, according to military aerospace author Thomas Newdick.

Newdick emphasized that — while espionage likely played a role in the development of China's fifth-generation stealth fighter fleet — the craft were not outright 'copies.'

'Critical outright differences' are discernable in the new photo, he noted, including twin-engines on the J-35A distinct from the F-35's massive single turbofan engine, and a more slender and sleek design that avoids the some of the F-35's design flaws. 

The J-35A is also reportedly faster than the F-35, capable of a maximum speed of Mach 2.0, compared to the American stealth fighter's top speed of Mach 1.6.

A former deputy captain with the Chinese Air Force's Bayi Aerobatic Team, Zhang Xinmin, told Aaj News that the J-35A had been custom made to withstand harsh conditions, like high-salt and high-humidity environments.

But, as Newdick wrote for The War Zone, 'clearly many elements' were 'at least heavily inspired if not cribbed from the F-35,' including its 'diverterless supersonic inlets' air-intakes on its engines and the shape of its cockpit canopy.

'Even its official designation [i.e. '35'] isn't trying to hide that reality,' Newdick said.

The clearest previous image of China's future carrier-borne stealth fighter known as J-35 surfaced in July of 2020 on Chinese social media Weibo (above)

Carrier fighter mockups of the J-35 (right) and J-15 (left) were spotted on the aircraft carrier Liaoning and posted to social media on what was then Twitter but is now X.com

The expensive program to develop and integrate three variations of the F-35 into America's fighting force has led to at least 29 incidents and accidents over the years.

Last May, an F-35B crashed shortly after attempting a takeoff at Kirtland Air Force Base in New Mexico. 

The F-35B is a variant designed for 'short takeoff and vertical landing' (STOVL), a bulk-adding technical specification that's notably absent from both J-35 models.

The J-35 is the second radar-evading stealth jet in China's military arsenal, after the J-20 'Dragon' which entered service in 2017. 

The J-20 is a 'heavy-duty stealth fighter jet' and the J-35 is a 'medium-sized multi-role stealth fighter jet,' according to Military analyst Wang Mingzhi.

'The primary distinction is that the J-20 focuses on air superiority missions, while the J-35A is versatile, capable of pursuing air superiority and accomplishing a variety of ground and maritime strike missions,' Wang explained.

'In future operations, these two aircraft can precisely target at both land and sea objectives in a coordinated manner, thus playing a crucial role for achieving air superiority,' the analyst continued in a post for China's Defense Ministry website.

The expensive program to develop and integrate three variations of the F-35 into America's fighting force has led to at least 29 serious incidents over the years. Above emergency workers respond to a crash of an F-35B near the Albuquerque International Airport on May 28, 2024

China's defense ministry said the J-35 was built by the Shenyang Aircraft Design and Research Institute, a subsidiary of the Asian country's Aviation Industry Corporation. 

Heavy state-planning and secrecy characteristic of the communist 'people's republic' has shielded the exact cost for any of China's stealth fighters from view — but a 2024 report by defense publication Janes priced the J-20 at $110 million.

But extrapolations, based on estimates from Zhou Chenming of Beijing-based Yuan Wang military tech think tank, place the J-35s at about $21 to $36 million each.

'The price of Chinese self-developed military weapon is normally one-fifth to one-third of the price of a similar US weapon,' Zhou said. And the current reported cost of America's F-35s are around $109 million apiece.

'The J-35 series is designed to be one platform with multiple variants for both Chinese air and naval forces,' the ministry said.

Analysts, including Newdick, have noted that China's new stealth fighter's J-35 version appears to be optimized for takeoff via an 'electromagnetic catapult launch system,' onboard China's latest and state-of-the-art carrier, Fujian.

But photos of fighter mock-ups show the jets will also be deployed from China's older aircraft carriers like Liaoning and Shenyang, via their 'ski-jump' takeoff ramps. 

Above, a visual timeline of the China's progess on the stealth J-35: the original FC-31 airframe (2014), the revised FC-31 (2016), the first J-35 prototype (2021) and an updated J-35 (2022) 

German magazine Der Spiegel was the first to publish the cache of Snowden documents in 2015 that revealed a top secret US government presentation alleging China's theft of 'many terabytes' of F-35 program data.

According to sources, the data breach occurred in 2007 — a cyberattack at the prime defense contractor undertaking America's effort to construct the F-35 Lightning II joint strike fighter jet (F-35B), Lockheed Martin. 

Shortly after the Snowden leak, US officials claimed that 'classified F-35 information is protected and remains secure,' according to The Diplomat.

China's cyber-spying operation, which had been code-named 'Byzantine Hades' by US investigators, had first been revealed by Wikileaks in 2011.

Investigators claimed that they had traced the origin of some of these past hacks to a specific unit of the Chinese People's Liberation Army.

German magazine Der Spiegel was the first to publish the cache of Snowden documents in 2015 that revealed a top secret US government presentation (above) alleging China's theft of 'many terabytes' of F-35 program data. Investigators called the alleged op 'Byzantine Hades'

US officials broadly characterized that 'Byzantine Hades' hacking operation as a plot to 'cause serious damage to DoD interests,' according to the top secret power point presentation

It's unclear when US officials may have first suspected that 'Byzantine Hades' had also been working to obtain stealth fighter secrets from Lockheed. 

However they broadly characterized that operation as a plot to 'cause serious damage to DoD interests,' according to the top secret power point presentation leaked by Snowden.

Pushing back on these accusations, Chinese Foreign Ministry spokesman Hong noted in 2015 that China has sought international collaborations to improve security and prevent hacking. 

'According to the materials presented by the relevant person, some countries themselves have disgraceful records on cybersecurity,' Hong added.

Infamously, Snowden's 2013 revelations as a former contractor to the National Security Agency (NSA) revealed a massive and questionably legal spying program by the agency. The revelations sparked international outrage.

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09-11-2024 om 20:40 geschreven door peter  

Shock photos show physical deterioration of stranded NASA astronaut Sunita Williams

• READ MORE: 'Gaunt' photo sparks health concerns about stranded astronaut

By ELLYN LAPOINTE FOR DAILYMAIL.COM

Photos have revealed NASA astronaut Sunita Williams' shocking weight loss as she and her crewmate remain stuck on the International Space Station (ISS). 

Williams, 59, and Barry Wilmore, 61, have been living on the ISS for five months after Boeing's faulty Starliner spacecraft was deemed unsafe to return them to Earth. 

A 'gaunt' photo of Williams taken on September 24 recently sparked concerns due to her 'sunken' cheeks which suggested she'd rapidly lost weight.

More recent images also show her with a pronounced facial structure and a thinner frame - a concern given she still has three months until she returns.  

Publicly, NASA has said Williams' is 'in good health' and that she's been undergoing 'routine medical evaluations'.

But behind the scenes, the space agency has been scrambling to 'stabilize the weight loss and hopefully reverse it,' according to a well-placed source. 

The unnamed NASA employee who is 'directly involved with the mission' told the New York Post that Williams has been 'unable to keep up with the high-caloric diets that astronauts must consume' while on the ISS.

Long-stay space missions take a toll on astronaut's health, especially women, leading to weight loss, muscle breakdown, bone loss, heart and vision problems and kidney stones.

NASA astronauts Sunita Williams and Barry Wilmore on June 5, gearing up for the Starliner launch that would deliver them to the International Space Station 

Female astronauts have been found to lose more weight - particularly through loss of muscle mass - than men during spaceflight.

'The pounds have melted off her and she's now skin and bones. So it's a priority to help her stabilize the weight loss and hopefully reverse it,' the NASA source told the New York Post. 

About a month ago, NASA doctors began working with Williams to help her regain weight, the source said, even before DailyMail.com's original story brought attention to her deterioration.

To stop and reverse her weight loss, Williams could have to eat up to 5,000 calories per day, the source added. 

For comparison, the average woman on Earth has to eat between 1,600 to 2,400 calories to maintain her weight. The source said that Williams started the mission at approximately 140 lbs.

Williams and Wilmore launched toward the orbiting laboratory on June 5 for what was supposed to be a 10 day mission, but have been stuck there for 156 days. 

Now, they are set to return to Earth on SpaceX's Crew-9 Dragon capsule. Williams, Wilmore and the four Crew-9 astronauts will journey home together in February 2025.

By then, the Starliner crew will have spent roughly eight to nine months on the ISS, depending on when in February they splash down. 

During that time, they will have endured microgravity, close quarters and high doses of space radiation.

A doctor has raised concerns about Williams' health, claiming this September 24 showed her looking 'gaunt'

Over the last five months, photos sent back to Earth have offered glimpses into the lives of Williams and Wilmore as they adapt to their unforeseen circumstances. 

Just hours before the Starliner launch on June 5, the crew was photographed beaming in their blue Boeing spacesuits as they geared up for their short mission.

In that photo, the astronauts - especially Williams - look strikingly different than in recent images, including the September snapshot. 

That image was one of several posted on the official ISS Instagram page that showed Williams, Wilmore and the other ISS astronauts making pizza together. 

It recently went viral as the public raised concerns over Williams' shocking appearance.  

In it, she appears 'gaunt,' Dr Vinay Gupta, a pulmonologist and veteran in Seattle, told DailyMail.com earlier this week.

'What you're seeing there in that picture is somebody that I think is experiencing the natural stresses of living at a very high altitude, even in a pressurized cabin, for extended periods,' he said. 

'Her cheeks appear a bit sunken - and usually it happens when you've had sort of total body weight loss.'

'Based on what I'm at least seeing in the photo, I don't think she's quite at a... place where I say her life's in danger.'

'But I don't think you can look at that photo and say she has sort of healthy body weight.'

The NASA source told the New York Post that they were shocked by the image. 'I gasped out loud when I saw the last picture,' they said.

'And it's something we're talking about, but not something we're obsessing about. It's a real concern and everyone is taking it seriously.' 

More recent photos, including one in which Williams and Wilmore pose for a group-shot with the other members of the Expedition 72 crew on October 4, show that Williams is still looking thin. 

NASA declined to comment on the statements made by the anonymous agency employee, and instead referred DailyMail.com back to their original statement which asserts that all astronauts aboard the ISS are 'in good health.' 

Wilmore (front left) and Williams (front right) pose with the other members of the Expedition 72 crew for a photo posted on October 4

The body burns more calories in space as it adjusts to the changes in gravity and tries to maintain its body temperature in cold, harsh conditions.

'They have to eat about 3,500 to 4,000 calories per day, just to maintain their current weight,' the NASA source said. 

'And when you start falling behind, your weight drops fast.' 

To prevent muscle and bone loss, astronauts exercise about 2.5 hours a day, which burns even more calories. 

'There's just things that the human body cannot adjust to, and one of which is, you know, she's probably losing more calories than she's intaking,' Dr Gupta said.

'Her body's probably working harder to do basic things, because the partial pressure of oxygen is lower than it would be on sea level.'

The problem of the body breaking down is a particular worry for women. 

A study assembled by NASA in 2014 found that women have greater loss of blood plasma volume than men during spaceflight.

And women’s stress response characteristically includes a heart rate increase while men respond with an increase in vascular resistance.

Read More

EXCLUSIVE

•  NASA gives health update on astronauts mysteriously hospitalized after space mission 

The loss of blood plasma causes your metabolic rate to temporarily increase while your body mobilizes resources to adjust to the loss of plasma.

And this response can slightly elevate your calorie burn, resulting in weight loss similar to what Williams may be experiencing.

Another study released by Ball University in 2023 also found that women lose more muscle than men in a microgravity environment such as spaceflight.

Williams and Wilmore still have to wait about three to four months until they can return to Earth on SpaceX's Crew Dragon. 

At this time, there is no evidence to suggest that Williams' alleged health decline will impact this timeline. 

Though the Starliner mission has extended significantly, Williams and Wilmore's ISS mission will not be the longest one ever completed by an astronaut.  

That record is held Russian cosmonauts Oleg Kononenko and Nikolai Chub, who returned to Earth aboard Russia's Soyuz MS-25 spacecraft on September 23 after 374 days on the ISS.

More recently, a crew of four NASA/SpaceX astronauts returned to Earth on October 25 after a 232-day stay on the ISS. 

All four crewmembers were taken to the hospital after splashing down. Three received medical evaluations and were discharged that same day, while one was kept for overnight observation. 

NASA has not disclosed any details about why the astronauts required medical attention, or which one was kept overnight.

{ https://www.dailymail.co.uk/ }

09-11-2024 om 20:19 geschreven door peter  

The planet’s surface is characterized by features that indicate water’s presence. River channels, impact craters, and basins that were once paleolakes illustrate Mars’ complex climatic history. Mars is much different from Earth, but they both follow the same set of natural rules.

In Earth’s frigid climates, rivers can flow underneath thick, protective ice sheets. New research shows that a similar thing happened on Mars. The research is published in JGR Planets and is titled “Massive Ice Sheet Basal Melting Triggered by Atmospheric Collapse on Mars, Leading to Formation of an Overtopped, Ice-Covered Argyre Basin Paleolake Fed by 1,000-km Rivers.” The lead author is Peter Buhler, a Research Scientist at the Planetary Science Institute.

The research examines a period about 3.6 billion years ago when Mars was likely transitioning from the Noachian Period to the Hesperian Period. At that time, most of the surface water was frozen into large ice sheets in Mars’ southern region, according to the research. The planet’s CO₂ atmosphere suffered periodic collapses, and sublimated out of the atmosphere. Those collapses formed a layer of CO₂ 650 meters (0.4 miles) thick that created a massive ice cap over the South Pole. It insulated the 2.5-mile-thick (4 km) layer of frozen water that made up the ice sheets.

Buhler modelled how the CO₂ cap acted as a thermal blanket and showed that it released massive amounts of meltwater from the frozen pole. This water flowed down rivers, with the top layers freezing and insulating the liquid water underneath.

“You now have the cap on top, a saturated water table underneath and permafrost on the sides,” Buhler said. “The only way left for the water to go is through the interface between the ice sheet and the rock underneath it. That’s why on Earth you see rivers come out from underneath glaciers instead of just draining into the ground.”

According to Buhler’s work, enough water was liberated to fill the Argyre Basin.

The Argyre Basin is one of the largest impact basins on the planet, measuring roughly 1800 km (1100 mi) in diameter. This massive impact basin was formed billions of years ago by a comet or asteroid striking Mars. It drops about 5.2 km (3.2 mi) below the surrounding plains, making it the second deepest basin on Mars. Scientists have long thought that the basin once held water—as much as the Mediterranean Sea—and Buhler’s work shows how it may have filled.

“Eskers are evidence that at some point there was subglacial melt on Mars, and that’s a big mystery,” Buhler said. Eskers are long stratified ridges of sand and gravel deposited by meltwater streams that flow under glaciers. They’re common on Earth, where glaciers once covered the surface. Mars’ eskers support the idea that the same thing happened on that planet.

The subglacial rivers would have flowed underneath the ice, where they were insulated from the cold. When they exited the glacier, they would have oozed along until a thick enough ice cap formed to insulate them. Buhler says that the ice would’ve grown until it was hundreds of meters thick, and the water flowing under the ice caps would’ve been several feet deep. The water would’ve carved out river channels thousands of miles long, and there are several of those that go from the polar cap to the Argyre Basin.

“People have been trying to discover processes that could make that happen, but nothing really worked,” Buhler said. “The current best hypothesis is that there was some unspecified global warming event, but that was an unsatisfying answer to me, because we don’t know what would have caused that warming. This model explains eskers without invoking climatic warming.”

Argyre Basin is massive and voluminous, and proposed explanations for how it was filled with water were left wanting. It has approximately the same volume as the Mediterranean Sea. Buhler’s model shows that it took about ten thousand years for the basin to fill, and after it filled, the water emptied into plains about 8,000 km (5,000 miles) away.

This process happened repeatedly over a one-hundred-million-year era, with each event separated by millions of years.

“This is the first model that produces enough water to overtop Argyre, consistent with decades-old geologic observations,” Buhler said. “It’s also likely that the meltwater, once downstream, sublimated back into the atmosphere before being returned to the south polar cap, perpetuating a pole-to-equator hydrologic cycle that may have played an important role in Mars’ enigmatic pulse of late-stage hydrologic activity. What’s more, it does not require late-stage warming to explain it.”

Buhler’s work is supported by other research. “Previous literature supports the presence of a ~0.6 bar (atmospheric) CO₂ inventory, as utilized in the model, near the Noachian-Hesperian boundary,” he writes in his research. The history of Mars’ atmospheric pressure is backed up by cosmochemistry, mineralogy, atmosphere and meteorite trapped-gas isotopic ratios, geomorphology, and extrapolations of modern-day atmospheric escape.

“Thus, there is strong evidence that Mars had a sufficiently large mobile CO₂ reservoir to drive the atmospheric-collapse-driven melting scenario described in this manuscript, with collapse occurring at a time commensurate with Valley Network formation during Mars’ intense, Late Noachian/Early Hesperian terminal pulse of intense fluvial activity,” Buhler writes.

That period of Mars’ history stands out as its own distinct phase of geological activity, whereas changes were more gradual in the earlier Noachian Period. The Late Noachian/Early Hesperian saw intense valley network formation. Many of these valleys are deeply carved into the landscape, often cutting through older geological features. That suggests that the water flow was powerful and erosive. This fluvial activity also created large deposits of sediment, like the ones NASA’s Perseverance Rover is exploring in Jezero Crater.

Buhler’s research is partly based on modern-day observations of Mars’ atmospheric CO₂ and its cycles. Much of it is actually frozen and bound to the regolith. Mars’ rotational tilt shifts over a 100,000-year timeline. When it’s closer to straight up and down, the Sun hits the equator, and CO₂ is released from the regolith into the atmosphere. It eventually reaches the poles, where it’s frozen into the caps.

When Mars is tilted, the poles are warmed, and the CO₂ sublimates and is released into the atmosphere again. It eventually reaches the now-cooler regolith, which absorbs it. “The atmosphere is mostly just along for the ride,” Buhler said. “It acts as a conduit for the real action, which is the exchange between the regolith and the southern polar ice cap, even today.”

Buhler is still working with his model and intends to continue testing it more rigorously. If it successfully withstands more testing, our understanding of Mars will take a big leap forward.

{ https://www.universetoday.com/  }

09-11-2024 om 18:41 geschreven door peter  

By manufacturing satellites out of wood, the University of Kyoto scientists expect they will burn up when they re-enter Earth’s atmosphere at the end of their service. This will prevent potentially harmful metal particles from being generated when a retired satellite returns to Earth. The small satellite measures just 10 cm (4 in) on a side and weighs only 900 grams, making it one of the lightest satellites ever sent to space. Its name comes from the Latin word for wood (“lingo”) and CubeSat, a class of small satellites with a form factor of 10 cm cubes.

Before launch, the science team installed LingoSat in a special container prepared by the Japan Aerospace Exploration Agency (JAXA). According to a spokesperson for Sumitomo Forestry, LignoSat’s co-developer, the satellite will “arrive at the ISS soon and will be released to outer space about a month later.”

Once the satellite reaches the ISS, it will dock via the Kibo Japanese Experiment Module (JEM) before deployment. It will then spend the next six months in space, and data will be sent from the satellite to researchers who will monitor it for signs of strain. Ultimately, the goal is to determine if wooden satellites can withstand the extreme temperature changes and conditions in space. A second satellite, LingoSat 2, is a double-unit CubeSat currently scheduled for launch in 2026.

Further Reading: 

• The Guardian

{ https://www.universetoday.com/  }

09-11-2024 om 18:40 geschreven door peter  

Massive stars about eight times more massive than the Sun explode as supernovae at the end of their lives. The explosions, which leave behind a black hole or a neutron star, are so energetic they can outshine their host galaxies for months. However, astronomers appear to have spotted a massive star that skipped the explosion and turned directly into a black hole.

Stars are balancing acts between the outward force of fusion and the inward force of their own gravity. When a massive star enters its last evolutionary stages, it begins to run out of hydrogen, and its fusion weakens. The outward force from its fusion can no longer counteract the star’s powerful gravity, and the star collapses in on itself. The result is a supernova explosion, a calamitous event that destroys the star and leaves behind a black hole or a neutron star.

However, it appears that sometimes these stars fail to explode as supernovae and instead turn directly into black holes.

New research shows how one massive, hydrogen-depleted supergiant star in the Andromeda galaxy (M31) failed to detonate as a supernova. The research is “The disappearance of a massive star marking the birth of a black hole in M31.” The lead author is Kishalay De, a postdoctoral scholar at the Kavli Institute for Astrophysics and Space Research at MIT.

These types of supernovae are called core-collapse supernovae, also known as Type II. They’re relatively rare, with one occurring about every one hundred years in the Milky Way. Scientists are interested in supernovae because they are responsible for creating many of the heavy elements, and their shock waves can trigger star formation. They also create cosmic rays that can reach Earth.

This new research shows that we may not understand supernovae as well as we thought.

The star in question is named M31-2014-DS1. Astronomers noticed it brightening in mid-infrared (MIR) in 2014. For one thousand days, its luminosity was constant. Then, for another thousand days between 2016 and 2019, it faded dramatically. It’s a variable star, but that can’t explain these fluctuations. In 2023, it was undetected in deep optical and near-IR (NIR) imaging observations.

The researchers say that the star was born with an initial mass of about 20 stellar masses and reached its terminal nuclear-burning phase with about 6.7 stellar masses. Their observations suggest that the star is surrounded by a recently ejected dust shell, in accordance with a supernova explosion, but there’s no evidence of an optical outburst.

“The dramatic and sustained fading of M31-2014-DS1 is exceptional in the landscape of variability in massive, evolved stars,” the authors write. “The sudden decline of luminosity in M31-2014-DS1 points to the cessation of nuclear burning together with a subsequent shock that fails to overcome the infalling material.” A supernova explosion is so powerful that it completely overcomes infalling material.

“Lacking any evidence for a luminous outburst at such proximity, the observations of M31-2014-DS1 bespeak signatures of a ‘failed’ SN that leads to the collapse of the stellar core,” the authors explain.

What could make a star fail to explode as a supernova, even if it’s the right mass to explode?

Supernovae are complex events. The density inside a collapsing core is so extreme that electrons are forced to combine with protons, creating both neutrons and neutrinos. This process is called neutronization, and it creates a powerful burst of neutrinos that carries about 10% of the star’s rest mass energy. The outburst is called a neutrino shock.

Neutrinos get their name from the fact that they’re electrically neutral and seldom interact with regular matter. Every second, about 400 billion neutrinos from our Sun pass right through every person on Earth. But in a dense stellar core, the neutrino density is so extreme that some of them deposit their energy into the surrounding stellar material. This heats the material, which generates a shock wave.

The neutrino shock always stalls, but sometimes it revives. When it revives, it drives an explosion and expels the outer layer of the supernova. If it’s not revived, the shock wave fails, and the star collapses and forms a black hole.

In M31-2014-DS1, the neutrino shock was not revived. The researchers were able to constrain the amount of material ejected by the star, and it was far below what a supernovae would eject. “These constraints imply that the majority of stellar material (?5 solar masses) collapsed into the core, exceeding the maximum mass of a neutron star (NS) and forming a BH,” they conclude. About 98% of the star’s mass collapsed and created a black hole with about 6.5 solar masses.

M31-2014-DS1 isn’t the only failed supernova, or candidate failed supernova, that astronomers have found. They’re difficult to spot because they’re characterized by what doesn’t happen rather than what does. A supernova is hard to miss because it’s so bright and appears in the sky suddenly. Ancient astronomers recorded several of them.

In 2009, astronomers discovered the only other confirmed failed supernova. It was a supergiant red star in NGC 6946, the “Fireworks Galaxy.” It’s named N6946-BH1 and has about 25 solar masses. After disappearing from view, it left only a faint infrared glow. In 2009, its luminosity increased to a million solar luminosities, but by 2015, it had disappeared in optical light.

A survey with the Large Binocular Telescope monitored 27 nearby galaxies, looking for disappearing massive stars. The results suggest that between 20% and 30% of massive stars can end their lives as failed supernovae. However, M31-2014-DS1 and N6946-BH1 are the only confirmed observations.

SHOCKING Transformation: How a STAR Turns into a BLACK HOLE

We Just Found Neutron Stars Crashing Into Black Holes

{ https://www.universetoday.com/ }

09-11-2024 om 18:39 geschreven door peter  

Laser Mapping Reveals Previously Unknown Maya City with Stone Pyramids in Mexico

Using a laser-based detection system, archaeologists have discovered over 6,500 pre-Hispanic structures — including a previously unknown Maya city named Valeriana — in Campeche, Mexico.

Detail of the major site of Valeriana in Campeche, Mexico.

Image credit: Auld-Thomas et al., doi: 10.15184/aqy.2024.148.

“Our analysis not only revealed a picture of a region that was dense with settlements, but it also revealed a lot of variability,” said Luke Auld-Thomas, a doctoral student at Tulane University and instructor at Northern Arizona University.

“We didn’t just find rural areas and smaller settlements. We also found a large city with pyramids right next to the area’s only highway, near a town where people have been actively farming among the ruins for years.”

“The government never knew about it; the scientific community never knew about it.”

“That really puts an exclamation point behind the statement that, no, we have not found everything, and yes, there’s a lot more to be discovered.”

Lidar technology uses laser pulses to measure distances and to create 3D models of specific areas.

It has allowed the scientists to scan large swaths of land from the comfort of a computer lab, uncovering anomalies in the landscape that often prove to be pyramids, family houses and other examples Maya infrastructure.

“Because lidar allows us to map large areas very quickly, and at really high precision and levels of detail, that made us react, ‘Oh wow, there are so many buildings out there we didn’t know about, the population must have been huge’,” Auld-Thomas said.

“The counterargument was that lidar surveys were still too tethered to known, large sites, such as Tikal, and therefore had developed a distorted image of the Maya lowlands.”

“What if the rest of the Maya area was far more rural and what we had mapped so far was the exception instead of the rule?”

The team’s results provide compelling evidence of a more complex and varied Maya landscape than previously thought.

“Lidar is teaching us that, like many other ancient civilizations, the lowland Maya built a diverse tapestry of towns and communities over their tropical landscape,” said Tulane University’s Professor Marcello Canuto.

“While some areas are replete with vast agricultural patches and dense populations, others have only small communities.”

“Nonetheless, we can now see how much the ancient Maya changed their environment to support a long-lived complex society.”

• A paper on the findings was published on October 29, 2024 in the journal Antiquity.
• Luke Auld-Thomas et al. 2024. Running out of empty space: environmental lidar and the crowded ancient landscape of Campeche, Mexico. Antiquity 98 (401): 1340-1358; doi: 10.15184/aqy.2024.148

{ https://www.sci.news/ }

08-11-2024 om 20:54 geschreven door peter  

Breaking News: Elon Musk Takes on Unidentified Flying Objects with New Fighter Jet

by Karen White

In a surprising and unparalleled move, Elon Musk, the visionary entrepreneur known for pushing the boundary of technology, has set his sights on a new endeavor: the development of a combat aircraft specifically designed to engage unidentified flying objects (UFOs).

Musk vs. The Extraterrestrial Unknown

Musk’s cutting-edge company, SpaceX, is already notorious for its exploration in the realms of space travel. Now, Musk seems intent on venturing into a domain that perhaps even the boldest of us dare not tread. He’s declared an open war on UFOs, not with words, but with raw technical prowess.

The Battle Begins: Musk’s UFO Fighter Jet

The fighter jet, currently under wraps, promises to pack the most advanced and modern technology, supplemented by Musk’s signature ingenious design. Reports suggest a mix of radars, detection systems, and energy weapons with never-seen-before capabilities, all aimed at identifying and neutralizing any potential extraterrestrial threat.

While the exact capabilities of this jet remain a mystery, we know for certain that it will capitalize on Musk’s notable experience with groundbreaking propulsion systems and high-end spacecraft technology from previous SpaceX projects.

Unveiling a New Era of Defence

The creation of such a craft brings thrilling implications. Could we be on the cusp of a new era of defense, one that doesn’t stop at skyscrapers or aircraft carriers, but ventures into space?

As the UFO fighter jet project rolls forward, we hold our breath, waiting to see how Elon Musk, the maverick game-changer, changes yet another game. The question remains just how far into the stars this battle will take him, and likewise, the world. See how our future will pan out as we step boldly into an era of extraterrestrial warfare.

UFO Defense: A New Frontier or Pure Foolhardiness?

Elon Musk: A man against the universe?

Elon Musk, the vanguard trailblazer immortalized for his ventures in cutting-edge technology, has shattered expectations once more. His new target: Unidentified Flying Objects (UFOs). Musk proposes to launch a combat aircraft specifically geared towards subduing these unknown airborne phenomena. But how might this audacious project alter our world and beyond?

The Future Fighter: Challenging the Cosmic Unknown

Reputed tech titan SpaceX, helmed by Musk, is drawing from its substantial knowledge pool to develop the UFO combat jet. Equipped with pioneering radars, new-age detection systems, and unprecedented energy weapons, the planned aircraft appears a formidable force. But with no technical specifics currently available, judgments about the aircraft’s efficacy remain purely speculative.

The Broader Impact: A New Stage in Defense Development?

Given Musk’s track record, a successful UFO defense jet could legitimately usher in a novel era in defense technology. Herein lies the potential to radically transform not just our earthbound defense systems, but potentially set the guideline for pre-emptive cosmic defense.

The Flip Side: Sowing Seeds of Alien Hostility?

Contrarily, some pose the argument that endeavoring into combat-ready space exploration, particularly against unidentified cosmic entities, might incite aggression rather than promote universal peace. Are we dialing up any existing possibility for extraterrestrial hostility?

In conclusion, Musk’s new project may hold thrilling possibilities, yet with them comes an inherent risk. Much like the unexplored cosmos themselves. Peek into our future, potentially a new era of interstellar defense or cosmic controversy? We shall wait with bated breath to find the answer.

Interested in more innovative tech news? Visit the SpaceX main site.

{ https://agogs.sk/en/ }

08-11-2024 om 20:07 geschreven door peter  

This image of NGC 5468, a galaxy located about 130 million light-years from Earth, features combined data from the Hubble and James Webb space telescopes. This is the farthest galaxy in which Hubble has identified Cepheid variable stars

(Credit: NASA, ESA, CSA, STScI, Adam G. Riess (JHU, STScI)).

“This spans the full range where we made measurements with Hubble,” said co-author Gagandeep Anand of the Space Telescope Science Institute in Baltimore, which operates the Webb and Hubble telescopes for NASA. “So, we’ve gone to the end of the second rung of the cosmic distance ladder.”

In making these measurements, the researchers hoped to find that errors in calculating the first steps in the ladder were propagating into later measurements, resulting in the Hubble tension. For example, some astrophysicists have postulated that the proximity of Cepheid stars to each other may result in a mismeasurement of their brightness. Such a measurement error would only grow as distances increased. Others have guessed that interstellar dust may be to blame for the conflicting readings.

Instead, the SHOES Webb readings matched perfectly with Hubble, meaning that calculation errors in the cosmic distance ladder are not to blame. “Combining Webb and Hubble gives us the best of both worlds,” said Riess. “We find that the Hubble measurements remain reliable as we climb farther along the cosmic distance ladder.”

A special class of star known as a Cepheid variable star is visible above in the center of each of these images, which NASA says is used as a ‘milepost marker’ for measuring the universe’s rate of expansion

(Credit: NASA, ESA, CSA, STScI, Adam G. Riess (JHU, STScI)).

The researcher also said their new survey covered everything Webb studied in the past, and the results were still consistent and error-free. “We’ve now spanned the whole range of what Hubble observed, and we can rule out a measurement error as the cause of the Hubble Tension with very high confidence,” Riess said.

New Tools Could Solve Mystery of Hubble Tension

Since the new Webb readings confirmed those from Hubble, the researchers say that new astronomical tools that can measure elements of cosmic expansion may be needed to answer the Hubble tension.

First up is the European Space Agency’s Euclid Space Telescope, which was launched in July 2023 and reached its destination at Lagrange 2, roughly four times as far away from Earth as the moon, about a month later. According to the ESA’s mission page, “Euclid will explore how the Universe has expanded and how structure has formed over cosmic history, revealing more about the role of gravity and the nature of dark energy and dark matter.”

The most promising data may come from NASA’s planned Nancy Grace Roman Space Telescope, which is scheduled for launch in May 2027. With a view that is over 100 times wider than Hubble, this observatory has the potential to measure light from over 100 billion galaxies during its operational lifetime.

According to its mission page, “This observatory will also be able to block starlight to directly see exoplanets and planet-forming disks, complete a statistical census of planetary systems in our galaxy, and settle essential questions in the areas of dark energy, exoplanets, and infrared astrophysics.”

Ultimately, one or both of these tools may allow astronomers and astrophysicists to connect the beginning of the initial two rungs of the cosmic distance ladder confirmed by Webb with the afterglow of the big band that represents the beginning of the universe, resulting in a final solution to the Hubble tension.

“We need to find out if we are missing something on how to connect the beginning of the universe and the present day,” said Riess.

• Christopher Plain is a Science Fiction and Fantasy novelist and Head Science Writer at The Debrief. Follow and connect with him on X, learn about his books at plainfiction.com, or email him directly at christopher@thedebrief.org.

{ https://thedebrief.org/category/space/ }

08-11-2024 om 00:48 geschreven door peter  

Fast Radio Bursts Mostly Come from Massive Star-Forming Galaxies

Fast Radio Bursts (FRBs) are millisecond-duration events detected from beyond our Milky Way Galaxy. FRB emission characteristics favor magnetars as their sources, as evidenced by FRB-like bursts from a magnetar in the Milky Way, and the star-forming nature of FRB host galaxies. However, the processes that produce FRB sources remain unknown. According to new research, FRBs are more likely to occur in massive star-forming galaxies. The study also suggests that magnetars, whose magnetic fields are 100 trillion times stronger than Earth’s, often form when two stars merge and later blow up in a supernova.

This photo montage shows the antennas of the Deep Synoptic Array-110, which are used to discover and pinpoint the locations of fast radio bursts (FRBs). Above the antennas are images of some of the FRB host galaxies as they appear on the sky. The galaxies are remarkably large, challenging models that describe FRB sources.

Image credit: Annie Mejia / Caltech.

“The immense power output of magnetars makes them some of the most fascinating and extreme objects in the Universe,” said lead author Kritti Sharma, a graduate student at Caltech.

“Very little is known about what causes the formation of magnetars upon the death of massive stars. Our work helps to answer this question.”

To search for FRBs, Sharma and colleagues used the Deep Synoptic Array-110 (DSA-110) at the Owens Valley Radio Observatory near Bishop, California.

To date, the sprawling radio array has detected and localized 70 FRBs to their specific galaxy of origin (only 23 other FRBs have been localized by other telescopes).

In the current study, the researchers analyzed 30 of these localized FRBs.

“DSA-110 has more than doubled the number of FRBs with known host galaxies. This is what we built the array to do,” said Caltech’s Dr. Vikram Ravi.

Although FRBs are known to occur in galaxies that are actively forming stars, the authors, to their surprise, found that the FRBs tend to occur more often in massive star-forming galaxies than low-mass star-forming galaxies.

This alone was interesting because the astronomers had previously thought that FRBs were going off in all types of active galaxies.

With this new information, they started to ponder what the results revealed about FRBs.

Massive galaxies tend to be metal-rich because the metals in our Universe — elements that are manufactured by stars — take time to build up over the course of cosmic history.

The fact that FRBs are more common in these metal-rich galaxies implies that the source of FRBs, magnetars, are also more common to these types of galaxies.

Stars that are rich in metals — which in astronomical terms means elements heavier than hydrogen and helium — tend to grow larger than other stars.

“Over time, as galaxies grow, successive generations of stars enrich galaxies with metals as they evolve and die,” Dr. Ravi said.

What is more, massive stars that explode in supernovae and can become magnetars are more commonly found in pairs.

In fact, 84% of massive stars are binaries. So, when one massive star in a binary is puffed up due to extra metal content, its excess material gets yanked over to its partner star, which facilitates the ultimate merger of the two stars.

These merged stars would have a greater combined magnetic field than that of a single star.

“A star with more metal content puffs up, drives mass transfer, culminating in a merger, thus forming an even more massive star with a total magnetic field greater than what the individual star would have had,” Sharma said.

In summary, since FRBs are preferentially observed in massive and metal-rich star-forming galaxies, then magnetars (which are thought to trigger FRBs) are probably also forming in metal-rich environments conducive to the merging of two stars.

The results therefore hint that magnetars across the Universe originate from the remnants of stellar mergers.

In the future, the team hopes to hunt down more FRBs and their places of origin using DSA-110, and eventually the DSA-2000, an even bigger radio array planned to be built in the Nevada desert and completed in 2028.

“This result is a milestone for the whole DSA team. A lot of the authors on this paper helped build the DSA-110,” Dr. Ravi said.

“And the fact that the DSA-110 is so good at localizing FRBs bodes well for the success of DSA-2000.”

• The findings were published today in the journal Nature.

{ https://www.sci.news/ }

07-11-2024 om 21:33 geschreven door peter  

Elon Musk gesturing on stage

© Marc Piasecki/Getty Images

Elon Musk makes headlines often with his eccentric behavior and sci-fi-esque projects under SpaceX and Tesla. Recently, a rumor was published that Elon Musk was developing a fighter jet that seemed to be right out of a science fiction story. The story about Elon Musk's "UFO fighter jet" picked up steam online, and some may be talking about it without doing their due diligence of fact-checking the story and ensuring that it's real. 

Looking at the recent press releases from SpaceX and Tesla, as well as comments from Musk himself, proves that there's no evidence that one of Elon Musk's most recent projects involved a "UFO fighter jet." Unfortunately, even if you think a revolutionary fighter jet fits Elon Musk's entrepreneurial M.O., there's no evidence of a ground-breaking test flight that caused governmental upset, as reported by a viral YouTube video. Let's take an in-depth look at the rumors about Elon Musk's "UFO fighter jet."

Read more: 

• 14 Best Fighter Planes And Jets Of All Time

Origins Of The Elon Musk UFO Fighter Jet Rumor

Fake image of SpaceX UFO jet

© Hyperspeed/YouTube

A recent video from HyperSpeed on YouTube alleged that Elon Musk had been building what it describes as a "UFO fighter jet," with specifications and weaponry right out of a science fiction novel. The video alleged that the jet had been spotted flying in several air spaces for "testing," and that it would be equipped with "microwave weapons" that could melt other aircraft in combat. 

The viral video also alleged that the new fighter jet (pictured above, which is a doctored or photoshopped image) would be equipped with EMPs that could disrupt enemy weaponry and vehicles. HyperSpeed's video should have been a red flag for many viewers, as its language and tone were fantastical. The viral video seemed more interested in telling a story about how cool SpaceX is rather than reporting about this alleged fighter jet project. Most of the video was just recounting various accomplishments of SpaceX, Tesla, and Musk himself rather than reporting on the story in the headline, which are all major red flags for a story being fake or possibly AI generated.

Is Elon Musk Really Designing A Fighter Jet

Elon Musk posing on red carpet

© Kathy Hutchins/Shutterstock

At this time, there is no evidence, announcement, or any kind of reputable reporting that Elon Musk is designing a fighter jet. Even if he or one of his companies were, it would likely be nothing like the jet alleged in HyperSpeed's video. The "X-One" jet talked about in the video is pure science fiction by today's technological standards. The things the video alleges this new aircraft can do are pretty far beyond the realm of practical possibility: Like allegedly being capable of 4,600 mph (Mach 6) speeds with "impressive fuel efficiency," its ability to disguise itself "as a cloud," as well as using microwaves to "melt enemy aircraft." 

Even if Musk were to design this exact aircraft, there's no telling whether it would be mass-production-friendly — especially with all the sci-fi weaponry that HyperSpeed is alleging it comes with — as it would need to secure a contract with any military worldwide. It's safe to say that if Musk was working on a fighter jet project right now, it would be highly top secret, especially if it's for the U.S. military — it would be nothing like what HyperSpeed is alleging it to be.

What Elon Musk Is Actually Working On Right Now

Tesla robotaxi parked on street

© Tesla

Elon Musk's most recent project that he has talked about is his Cybercab robotaxi service. This service uses fully autonomous taxi cabs that will ferry riders from one place to another without intervention from a human driver. This service is slated to be released for public use within the next few years, according to Musk. However, as with any revolutionary service, it's best not to hedge one's bets on a service's purported release date — especially since he's already predicted the release of his robotaxis as being one year away ... five years ago.

In addition to moving towards a fully autonomous taxi service, Musk is still currently working on his Starship project, which recently reached a new, ground-breaking record when part of his newest rocket was captured upon landing during a test flight. Before the launch, the SpaceX team said they would not have been surprised if the rocket needed to land in the Gulf of Mexico, but that never came to pass as the bottom half of the rocket — the Super Heavy Booster — was able to be maneuvered into the robot arms on the launch pad.

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Read the original article on SlashGear.

No evidence

At this time, there is no evidence, announcement, or any kind of reputable reporting that Elon Musk is designing a fighter jet. Even if he or one of his companies were, it would likely be nothing like the jet alleged in HyperSpeed's video.

In an unprecedented announcement, Elon Musk has unveiled SpaceX's groundbreaking new light-speed engine, a technological marvel that challenges our understanding of physics as we know it. The world of space exploration stands on the brink of a new era, as this innovative engine promises to revolutionize how we travel through the cosmos. Today, we delve into the details of this remarkable invention and its implications for humanity's future among the stars.

VIDEOS

Elon Musk Unveils UFO Fighter Jet That Defies Physics

Elon Musk Unveils UFO Fighter Jet That Defies Physics

{ https://www.bing.com/?FORM=Z9FD1 }

07-11-2024 om 21:11 geschreven door peter  

Chinese scientists have built a 'real-life DEATH STAR': Terrifying Star Wars-inspired weapon focuses microwave beams to wipe out enemy satellites

• READ MORE: Scientists reveals how to build a REAL lightsaber 

By WILIAM HUNTER

Chinese scientists claim to have created a 'real-life Death Star' capable of devastating enemy satellites in orbit.

The science-fiction-inspired weapon combines pulses of microwave radiation into a single powerful beam - just like the planet-destroying lasers shown in Star Wars.

In order to merge, the electromagnetic pulses must hit the exact same target within 170 trillionths of a second.

That requires levels of timing more precise than the atomic clocks on advanced GPS satellites - a feat previously thought to be impossible.

However, the weapon has now completed experimental trials for potential military applications thanks to breakthroughs in 'ultra-high time precision synchronisation'.

This could be used for 'achieving multiple goals such as teaching and training, new technology verification, and military exercises,' experts say. 

While the exact details of the weapon remain highly classified, Chinese academic journals suggest that microwave weapons like this are being developed for use in space.

And while it might not have the power to blow up a planet, it could wreak havoc on enemy communications or GPS satellites.

Chinese scientists claim to have created a real-life Death Star weapon which merges pulses of microwave energy to create a beam strong enough to wipe out enemy satellites 

According to the South China Morning Post, the secretive space weapon uses an array of seven microwave-firing 'vehicles'.

These vehicles are positioned over a large area but fire together to hit their target with a single, powerful attack.

The scientists behind the device say that most microwave weapons 'have not formed effective combat capabilities' due to power limitations.

But, by merging several waves into a single pulse, the resulting power can be strong enough to overwhelm an enemy satellite.

What makes this challenging is that combining microwave pulses requires synchronising the bursts with never-before-seen levels of precision.

Even the atomic clock aboard the Chinese Tiangong space station, which only misses one second every few billion years, cannot reach the required levels of precision.

However, Chinese scientists say they have now been able to overcome these challenges by connecting each of the vehicles with fibreoptic cables.

While the exact specifications remain secret, last year Chinese scientists managed to achieve a time synchronisation accuracy of just 10 trillionths of a second over a distance of 1,100 miles (1,800km). 

Just like the Death Star in Star Wars (pictured), this weapon combines separate beams of energy into a single directed pulse 

How does the 'real-life Death Star' work?

1. Seven microwave 'vehicles' are connected by fibreoptics
2. The vehicles use lasers to measure their exact position 
3. The vehicles fire a pulse of microwave energy with extremely precise timing 
4. All seven beams hit the target at precisely the same moment 
5. Enemy satellite communications are wiped out 

To ensure the microwave pulses hit the exact same point, the weapon also uses laser positioning devices to achieve millimeter-level navigation.

By analysing timing and positional data, a mobile command centre can then issue an attack command - triggering each of the seven vehicles to fire at once.

The researchers say that the microwave beams can achieve a combining effect of '1+1>2', hinting that the combined power could be higher than the sum of its parts.

This won't be quite as strong as the devastating power of the Death Star, but the resulting energy pulse could be more than enough to knock out an enemy satellite.

Studies have found that a weapon capable of delivering just one gigawatt of power would be enough to do serious damage to satellites in near-Earth orbit.

In recent years, milliaries around the world have been racing to develop a new generation of 'direct energy weapons'.

Unlike conventional weapons which use projectiles or explosives, these use powerful blasts of electromagnetic radiation to disrupt or destroy their targets.

There have already been significant advances in direct energy weapons which use lasers to burn through the hulls of missiles and drones.

Although it won't be strong enough to blow up a planet like in Star Wars (pictured), the weapon can use its microwave beams to knock out enemy satellites to disrupt communications and navigation 

More national militaries are investigating so-called 'direct energy weapons' which use bursts of high-intensity radiation to destroy or disrupt their targets. These include the British DragonFire laser weapon (pictured)

For example, the British Dragonfire laser weapon is strong enough to shoot a drone out of the air and accurate enough to hit a £1 coin from half a mile away.

Instead of burning through their targets, microwave weapons use intense bursts of electromagnetic radiation to disrupt electrical circuits.

Trials of microwave weapons have already shown that they can be effective against small targets like drones.

The Tactical High-Power Operational Responder (THOR), developed by the U.S. Air Force Research Lab, uses wide bursts of energy to take out entire swarms of drones.

The advantage is that the weapons are cheap to operate and don't use any projectiles, reducing the risk of collateral damage.

However, microwave weapons have proven difficult to target and use at longer ranges.

By overcoming the power limitations, combined microwave energy weapons could be the key to bringing these potentially devastating weapons into the frontier of space warfare.

As militaries become more reliant on satellite observations and communications there has been a growing interest in weapons which can target satellites.

Declassified footage of secret trials (pictured) at the MOD's Hebrides Range, showed that the British laser weapon system proved so accurate it could hit a £1 coin half a mile away

As low-Earth orbit becomes more important for military use nations are developing more weapons to target satellites. This includes the Chinese 'Death Star' microwave weapon and the American 'Meadowlands' satellite jammer revealed last month (pictured)

These satellite networks provide the infrastructure which supports deadly GPS-guided missiles, drone strikes, and troop movements on the ground.

Read More

• Secretive US weapon that JAMS Russian and Chinese satellites is finally ready 

This means that knocking out enemy communication, by electronic or physical means, could provide a decisive advantage in a conflict.

Last month, the US revealed its powerful new satellite jamming weapon designed to shut down Russian or Chinese communications at the start of a conflict.

The weapon has been developed by the Xian Navigation Technology Research Institute under the China Electronics Technology Group Corporation.

This organisation has been a major provider of electronic warfare weapons for the People's Liberation Army in the past.

However, it isn't yet clear when, if at all, this weapon will be deployed.

{ https://www.dailymail.co.uk/ }

07-11-2024 om 20:19 geschreven door peter  

EXCLUSIVE - NASA gives health update on astronauts mysteriously hospitalized after space mission

• READ MORE:  Watch Space Force's top secret spaceplane fly 

By ELLYN LAPOINTE FOR DAILYMAIL.COM

NASA today insisted stranded astronaut Sunita Williams is safe and healthy amid growing public concern for her health.

But the space agency again refused to give any details about four astronauts who were mysteriously hospitalized late last month after returning from a separate space mission.

A doctor raised concerns about Williams this week after a photo showed her looking 'gaunt', suggesting she had lost a significant amount of weight after spending more than 150 days stuck on the International Space Station.

But NASA holds firm that Williams and the rest of the astronauts aboard the ISS are doing fine.

'All NASA astronauts aboard the International Space Station undergo routine medical evaluations, have dedicated flight surgeons monitoring them, and are in good health,' NASA spokesperson Jimi Russell told DailyMail.com.

Concern over Williams came less than two weeks after the hospitalization of four NASA/SpaceX Crew-8 astronauts, who splashed down off the coast of Florida on October 25. The crew had spent 232 days aboard the ISS. 

One of them was hospitalized overnight due to a 'medical issue', while the other three were discharged that same day after undergoing medical evaluations. 

NASA refused to provide any details about why the crew was hospitalized, which astronaut had to complete an overnight stay, or whether the medical issues were related to their return to Earth.

WEARING ON HER: A doctor has raised concerns about Sunita's health, claiming this September 24 photo showed her looking 'gaunt'

The agency instead deferred DailyMail.com to a blog post from October 26.

The statement said that one of the astronauts stayed overnight at Ascension Sacred Heart Pensacola in Florida, but was 'in good health and will resume normal post-flight reconditioning with other crew members' after being discharged.

NASA's decision not to disclose who that astronaut was or reveal details about his or her condition was made 'to protect the crew member's medical privacy.'

While the agency has repeatedly expressed confidence in the wellbeing of its astronauts, studies have shown that  living in space takes a toll on human health.

This is especially true of long-term ISS missions, which typically last six months.

Space is a harsh environment that causes astronauts to lose body fat, muscle mass, bone density, and endure high doses of radiation.

This can lead to a range of health issues, including vision problems, kidney stones and even causing astronauts to become more vulnerable to infections on the ISS.

Williams and her crewmate, Barry Wilmore, have been aboard the ISS for six months as of today, and will remain there until February 2025 at the earliest.

By then, they will be able to catch a ride back to Earth on SpaceX's Crew-9 mission Dragon Capsule. 

All four of the Crew-8 astronauts were hospitalized following their return to Earth, but NASA has not released any details about the reason, or reasons, why

The photo of Williams, taken on September 24, shows her tucking into a pepperoni pizza and chips while surrounded by condiments and other treats.

'Her cheeks appear a bit sunken - and usually it happens when you've had sort of total body weight loss,' Dr Vinay Gupta, a pulmonologist in Seattle, told DailyMail.com.

'I think what I can discern by her face and her cheeks being sunken in is that [she] has probably been at a significant [calorie] deficit for a while.'

Weight loss is not uncommon among astronauts during extended ISS missions. In fact, most lose about five percent of their bodyweight during a four to six month stay aboard the orbiting laboratory, according to the Lunar and Planetary Institute. 

Dr Gupta told DailyMail.com: 'What you're seeing there in that picture is somebody that I think is experiencing the natural stresses of living at a very high altitude, even in a pressurized cabin, for extended periods.'

'Based on what I'm at least seeing in the photo, I don't think she's quite at a... place where I say her life's in danger,' he added.

'But I don't think you can look at that photo and say she has sort of healthy body weight.

As for Crew-9, which included NASA astronauts Matthew Dominick, Michael Barratt, and Jeanette Epps, as well as Roscosmos cosmonaut Alexander Grebenkin, it's possible that their health suffered during their ISS stay as well. 

The four astronauts spent 232 days - or nearly eight months - aboard the ISS. It's reasonable to believe that the stress their bodies endured during that time may have resulted in the need for medical attention upon their return to Earth. 

Alternatively, some have speculated that something went awry during the crew's descent, despite NASA's statement that the crew 'safely splashed down aboard their SpaceX Dragon spacecraft.' 

The fact that all four astronauts received some form of medical attention does suggest that the health issues were somehow related to their return flight.

{ https://www.dailymail.co.uk/ }

07-11-2024 om 19:58 geschreven door peter  

• READ MORE: Space plane will execute a 'never-before-seen-maneuver' 

By Nikki Main Science Reporter For Dailymail.Com

The Pentagon has kept a tight lid on details about the Space Force's secretive spaceplane that is perpetually flying 500 miles above Earth's surface.

But the Department of Defense (DoD) has released a rare video showing the Boeing-built X-37B spacecraft performing a 'groundbreaking' maneuver to reach a new level of orbit using a first-of-its-kind 'aerobraking' procedure.

The video shows how the $200 million craft point its flat underside forward, using friction from Earth's atmosphere to slow down, treating it like a brake, while directing the nose of the aircraft away from earth.

Boeing engineer John Ealy said: 'When we aerobrake, we utilize atmospheric drag to effectively step down our apogee one pass at a time until we get to the orbital regime that we want to be in.

'When we do this, we save enormous amounts of propellant, and that's really why aerobraking is important.'

The X-37B, roughly the size of a small bus and resembling a miniature space shuttle, launched for its seventh mission on December 29, 2023 and is currently still conducting experiments for NASA before it will return to Earth.

Space Force released a video showing the X-37B spacecraft's 'groundbreaking' maneuver

The X-37B aircraft is the first of its kind to use the Earth's atmosphere to reach a new level of orbit using an aerobraking procedure that relies on the friction to slow it down

Space Force has not released information about the spacecraft's main function but has said it will conduct experiments involving 'space domain awareness technologies.'

This could mean that the new technology will be used to keep an eye on other traffic in orbit and observe what other spacecrafts are doing.

The seventh mission marks the first time Boeing has attempted to carry out the aerobraking maneuver.

Aerobraking is a method of slowing down a spacecraft by using the atmosphere or outer gas layers of a planet.

The space plane 'dips' into the atmosphere, and as it does, the molecules of gas in the atmosphere rub against the ship.

This acts as resistance and slows the ship down.

Often a ship will use aerobraking to change an orbit or slow a ship enough so that gravity will pull it down to a planet.

It was designed with a dual purpose of landing like an aircraft on a runway while the service module mounted on the back carries additional payloads, although Boeing has not specified what those will be.

The spacecraft pointed its nose away from Earth as the friction heated up its underside, causing the bottom to cast an orange glow and slow down the vehicle

'Once the aerobrake maneuver is complete, the X-37B will resume its test and experimentation objectives until they are accomplished, at which time the vehicle will deorbit and execute a safe return as it has during its six previous missions,' the Space Force said. 

The seventh mission launched on top of a SpaceX Falcon Heavy rocket for the first time, putting it at an undisclosed altitude.

According to the Space Force, it is gathering data for future crewed missions by exposing plant seeds to the harsh radioactive environment in space.

The un-crewed X-37B is a hybrid launch vehicle that can operate as a regular airplane or spacecraft, which was is built using a lighter structure instead of the traditional aluminum and measures 29 feet long, about one-fourth the size of a NASA space shuttle.

It has the ability to perform missions that last up to 270 days to 'support long-term space objectives,' according to Boeing.

The X-37B spacecraft launched aboard a SpaceX Falcon Heavy rocket in December

Holly Murphy, program director for Boeing's Experimental Systems Group, said in the video: 'X-37B missions have continuously advanced our nation's space capabilities by testing new technologies that reduce risk and inform our future space architectures. Mission seven is no different.'

Space Force's X-37B has so far spent roughly 10 months in orbit but the agency has yet to reveal when its seventh mission will conclude.

However, the aerobraking maneuver that brings it closer to Earth could indicate that it will be returning soon.

The video's release comes as China is testing its own spaceplane, called Shenlong, which recently spent 268 day's in orbit and completed its third mission on September 6.

China is the only other country in the world to have a reusable spacecraft and has raised concerns that these planes will be used to launch microsatellites that could be used for military applications, according to the China Morning Star.

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07-11-2024 om 00:40 geschreven door peter  

New research examines the threats facing the habitable zone planets in our stellar neighbourhood. The study is “The 10 pc Neighborhood of Habitable Zone Exoplanetary Systems: Threat Assessment from Stellar Encounters & Supernovae,” and it has been accepted for publication in The Astronomical Journal. The lead author is Tisyagupta Pyne from the Integrated Science Education And Research Centre at Visva-Bharati University in India.

The researchers examined the 10-parsec regions around the 84 solar systems with habitable zone exoplanets. Some of these Habitable Zone Systems (HZS) face risks from stars outside of the solar systems. How do these risks affect their habitability? What does it mean for our notion of the habitable zone?

“Among the 4,500+ exoplanet-hosting stars, about 140+ are known to host planets in their habitable zones,” the authors write. “We assess the possible risks that local stellar environment of these HZS pose to their habitability.”

We have more than 150 confirmed exoplanets in habitable zones, and as exoplanet science advances, scientists are developing a more detailed understanding of what habitable zone means. Scientists increasingly use the terms conservative habitable zone and optimistic habitable zone.

The optimistic habitable zone is defined as regions that receive less radiation from their star than Venus received one billion years ago and more than Mars did 3.8 billion years ago. Scientists think that recent Venus (RV) and early Mars (EM) both likely had surface water.

The conservative habitable zone is a more stringent definition. It’s a narrower region around a star where an exoplanet could have surface water. It’s defined by an inner runaway greenhouse edge where stellar flux would vaporize surface water and an outer maximum greenhouse edge where the greenhouse effect of carbon dioxide is dominated by Rayleigh scattering.

Those are useful scientific definitions as far as they go. But what about habitable stellar environments? In recent years, scientists have learned a lot about how stars behave, the characteristics of exoplanets, and how the two are intertwined.

“The discovery of numerous extrasolar planets has revealed a diverse array of stellar and planetary characteristics, making systematic comparisons crucial for evaluating habitability and assessing the potential for life beyond our solar system,” the authors write.

To make these necessary systematic comparisons, the researchers developed two metrics: the Solar Similarity Index (SSI) and the Neighborhood Similarity Index (NSI). Since main sequence stars like our Sun are conducive to habitability, the SSI compares our Solar System’s properties with those of other HZs. The NSI compares the properties of stars in a 10-parsec region around the Sun to the same size region around other HZSs.

These indices put habitable zones in a larger context.

“While the concept of HZ is vital in the search for habitable worlds, the stellar environment of the planet also plays an important role in determining longevity and maintenance of habitability,” the authors write. “Studies have shown that a high rate of catastrophic events, such as supernovae and close stellar encounters in regions of high stellar density, is not conducive to the evolution of complex life forms and the maintenance of habitability over long periods.”

When radiation and high-energy particles from a distant source reach a planet in a habitable zone, they can cause severe damage to Earth-like planets. Supernovae are a dangerous source of radiation and particles, and if one were to explode close enough to Earth, that would be the end of life. Scientists know that ancient supernovae have left their mark on Earth, but none of them were close enough to destroy the atmosphere.

“Our primary focus is to investigate the effects of SNe on the atmospheres of exoplanets or exomoons assuming their atmospheres to be Earth-like,” the authors write.

The first factor is stellar density. The more stars in a neighbourhood, the greater the likelihood of supernova explosions and stellar flybys.

“The astrophysical impacts of the stellar environment is a “low-probability, high-consequence” scenario
for the continuation of habitability of exoplanets,” the authors write. Though disruptive events like supernova explosions or close stellar flybys are unlikely, the consequences can be so severe that habitability is completely eliminated.

When it came to the supernova threat, the researchers looked at high-mass stars in stellar neighbourhoods since only massive stars explode. Pyne and her colleagues found high-mass stars with more than eight solar masses in the 10-parsec neighbourhoods of two HZS: TOI-1227 and HD 48265. “These high-mass stars are potential progenitors for supernova explosions,” the authors explain.

Only one of the HZS is at risk of a stellar flyby. HD 165155 has an encounter rate of ?1 in 5 Gyr period. That means it’s at greater risk of an encounter with another star that could eject planets from its habitable zone.

The team’s pair of indices, the SSI and the NSI, produced divergent results. “… we find that the stellar environments of the majority of HZS exhibit a high degree of similarity (NSI> 0.75) to the solar neighbourhood,” they explain. However, because of the wide variety of stars in HZS, comparing them to the Sun results in a wide range of SSI values.

We know the danger supernova explosions pose to habitability. The initial burst of radiation could kill anything on the surface of a planet too close. The ongoing radiation could strip away the atmospheres of some planets further away and could also cause DNA damage in any lifeforms exposed to it. For planets that are further away from the blast, the supernova could alter their climate and trigger extinctions. There’s no absolutely certain understanding of how far away a planet needs to avoid devastation, but many scientists say that within 50 light-years, a planet is probably toast.

We can see the results of some of the stellar flybys the authors are considering. Rogue planets, or free-floating planets (FPPs), are likely in their hapless situations precisely because a stellar interloper got too close to their HZS and disrupted the gravitational relationships between the planets and their stars. We don’t know how many of these FPPs are in the Milky Way, but there could be many billions of them. Future telescopes like the Nancy Grace Roman Space Telescope will help us understand how many there truly are.

Habitability may be fleeting, and our planet may be the exception. It’s possible that life appears on many planets in habitable zones but can’t last long due to various factors. From a great distance away, we can’t detect all the variables that go into exoplanet habitability.

However, we can gain an understanding of the stellar environments in which potentially habitable exoplanets exist, and this research shows us how.

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06-11-2024 om 23:21 geschreven door peter