Dit is ons nieuw hondje Kira, een kruising van een waterhond en een Podenko. Ze is sinds 7 februari 2024 bij ons en druk bezig ons hart te veroveren. Het is een lief, aanhankelijk hondje, dat zich op een week snel aan ons heeft aangepast. Ze is heel vinnig en nieuwsgierig, een heel ander hondje dan Noleke.
This is our new dog Kira, a cross between a water dog and a Podenko. She has been with us since February 7, 2024 and is busy winning our hearts. She is a sweet, affectionate dog who quickly adapted to us within a week. She is very quick and curious, a very different dog than Noleke.
DEAR VISITOR,
MY BLOG EXISTS ALREADY 13 YEARS AND 2 MONTH.
ON 06/08/2024 MORE THAN 2.161.100
VISITORS FROM 135 DIFFERENT NATIONS ALREADY FOUND THEIR WAY TO MY BLOG.
THAT IS AN AVERAGE OF 400GUESTS PER DAY.
THANK YOU FOR VISITING MY BLOG AND HOPE YOU ENJOY EACH TIME.
The purpose of this blog is the creation of an open, international, independent and free forum, where every UFO-researcher can publish the results of his/her research. The languagues, used for this blog, are Dutch, English and French.You can find the articles of a collegue by selecting his category. Each author stays resposable for the continue of his articles. As blogmaster I have the right to refuse an addition or an article, when it attacks other collegues or UFO-groupes.
Druk op onderstaande knop om te reageren in mijn forum
Zoeken in blog
Deze blog is opgedragen aan mijn overleden echtgenote Lucienne.
In 2012 verloor ze haar moedige strijd tegen kanker!
In 2011 startte ik deze blog, omdat ik niet mocht stoppen met mijn UFO-onderzoek.
BEDANKT!!!
Een interessant adres?
UFO'S of UAP'S, ASTRONOMIE, RUIMTEVAART, ARCHEOLOGIE, OUDHEIDKUNDE, SF-SNUFJES EN ANDERE ESOTERISCHE WETENSCHAPPEN - DE ALLERLAATSTE NIEUWTJES
UFO's of UAP'S in België en de rest van de wereld In België had je vooral BUFON of het Belgisch UFO-Netwerk, dat zich met UFO's bezighoudt. BEZOEK DUS ZEKER VOOR ALLE OBJECTIEVE INFORMATIE , enkel nog beschikbaar via Facebook en deze blog.
Verder heb je ook het Belgisch-Ufo-meldpunt en Caelestia, die prachtig, doch ZEER kritisch werk leveren, ja soms zelfs héél sceptisch...
Voor Nederland kan je de mooie site www.ufowijzer.nl bezoeken van Paul Harmans. Een mooie site met veel informatie en artikels.
MUFON of het Mutual UFO Network Inc is een Amerikaanse UFO-vereniging met afdelingen in alle USA-staten en diverse landen.
MUFON's mission is the analytical and scientific investigation of the UFO- Phenomenon for the benefit of humanity...
Je kan ook hun site bekijken onder www.mufon.com.
Ze geven een maandelijks tijdschrift uit, namelijk The MUFON UFO-Journal.
Since 02/01/2020 is Pieter ex-president (=voorzitter) of BUFON, but also ex-National Director MUFON / Flanders and the Netherlands. We work together with the French MUFON Reseau MUFON/EUROP.
ER IS EEN NIEUWE GROEPERING DIE ZICH BUFON NOEMT, MAAR DIE HEBBEN NIETS MET ONZE GROEP TE MAKEN. DEZE COLLEGA'S GEBRUIKEN DE NAAM BUFON VOOR HUN SITE... Ik wens hen veel succes met de verdere uitbouw van hun groep. Zij kunnen de naam BUFON wel geregistreerd hebben, maar het rijke verleden van BUFON kunnen ze niet wegnemen...
12-12-2017
First AI with Imagination Could Mean ‘End of Reality As We Know It’
First AI with Imagination Could Mean ‘End of Reality As We Know It’
It seems like each week there’s some new development in artificial intelligence that causes everyone to freak out and proclaim the end of human superiority. Well, this is another one of those weeks. AI researchers at computing hardware manufacturer Nvidia have designed what is being billed as one of the first artificial intelligence networks with a working imagination. The system can create realistic (if not real) looking videos of fictional events using simple inputs, similar to how the human mind can imagine abstract or fictional scenarios based on a thought. Should we be frightened? How frightened?
Examples of the AI “imagination” showing how the system can change the weather in pre-recorded video clips without being fed clips of the target weather.
So far, not that frightened. The technology is still in its infancy, and has only been used in what researchers call “image-to-image translation,” or altering video clips and photos in small ways such as changing the setting from night to day, changing human subjects’ hair color, or switching a dog to one of another breed. Still, that’s pretty impressive if you think about it. Nvidia’s Ming-Yu Liu says that their system is the first to be able to do so simply by ‘imagining’ the new image or scene, as opposed prior similar systems which faced the problem of having to compile massive sets of data based on prior examples and extrapolating from those data:
We are among the first to tackle the problem, [and] there are many applications. For example, it rarely rains in California, but we’d like our self-driving cars to operate properly when it rains. We can use our method to translate sunny California driving sequences to rainy ones to train our self-driving cars.
The potential applications of this technology have lead some to wonder if similar AI networks might mean the “end of reality as we know it.” Whatever that means. Unless the whole universe spontaneously blinks out of existence, reality’s not going to end anytime soon. But I see what they mean; if completely real-looking video and audio can be generated by these AI networks, and those could be fed into, say, an advanced augmented reality setup or even some of the more Matrix-like brain-computer interfaces being developed, we could soon see the lines between virtual reality and physical reality start to get more difficult to distinguish. Until you take your headset off, that is. But what about if when these experiences can be transmitted directly into your brain’s sensory centers?
The system can take a photo of a dog and change it into another dog. And here I thought reality-killing AI would be much scarier.
While it’s unlikely we’ll see the end of any reality, we might see the creation of fully-fledged alternate realities. Without a doubt, this technology will someday be used to distort or obfuscate the truth here in our own reality. What is reality other than what we make of it, anyway? Recent events have shown us that it’s getting more and more difficult to discern truth from fiction in mass media; what will happen once completely real-looking video can be conjured up from the twisted imaginations of rogue AI systems? Of course, the same fears arose over the invention of moving pictures. Is this just the latest advancement in graphic and animation software, or could something more nefarious be brewing?
12-12-2017 om 20:20
geschreven door peter
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NASA komt met grote aankondiging. Heeft deze planeetjager buitenaards leven ontdekt?
NASA komt met grote aankondiging. Heeft deze planeetjager buitenaards leven ontdekt?
NASA komt donderdag met een grote aankondiging rond planeetjager Kepler, die volgens het ruimteagentschap een doorbraak heeft bereikt.
De ruimtetelescoop wordt ingezet door de NASA om te speuren naar andere aardes, waarvan op sommige leven kan bestaan.
Er is verder nog maar heel weinig bekend over de aankondiging, die hoogstwaarschijnlijk betrekking zal hebben op exoplaneten.
Sneller
De ruimtevaartorganisatie zei dat de ontdekking is gedaan met behulp van de kunstmatige intelligentie van Google, die wordt gebruikt om de gegevens die de telescoop doorstuurt te analyseren.
NASA hoopt levensvatbare planeten op die manier sneller te ontdekken.
De Kepler-telescoop is gelanceerd in 2009, toen er nog maar weinig exoplaneten waren ontdekt. Inmiddels weten we dat ze rond de meeste sterren draaien.
Helpen
De missie werd in 2012 afgerond, maar Kepler bleef actief. In 2014 begon de telescoop opnieuw naar exoplaneten te speuren en andere kosmische fenomenen te onderzoeken.
Omdat de telescoop zo ongelooflijk veel gegevens doorstuurt hebben wetenschappers moeite om de interessante planeten eruit te pikken. Kunstmatige intelligentie moet daarbij gaan helpen.
Groot nieuws
Eerder dit jaar kwam NASA met groot nieuws over een zonnestelsel dat veel overeenkomsten vertoont met het onze.
Rond de ster TRAPPIST-1 bleken zeven exoplaneten te draaien waarvan zeker drie leven kunnen herbergen.
Scientists had originally thought that the cigar-shaped object was a very strange passing asteroid. But a number of things have led scientists engaged in the search for alien life to wonder whether it might actually be an "artifact" from an alien civilisation.
Researchers involved in the Seti – Search for Extra-Terrestrial Intelligence – project are now preparing to point a powerful telescope at the bizarre object and find where it came from.
The mysterious object, which has been named Oumuamua, is our first visitor from another part of the galaxy to make it into our solar system. It flew past in October when it was spotted by astronomers from the University of Hawaii.
Scientists initially presumed that it was an asteroid. But a number of strange characteristics have led them to wonder whether it might have been intentionally formed.
It is long and cigar-shaped, for instance. While it is hundreds of metres long, it's only one tenth as wide – and it is very unusual for asteroids to come in such non-round forms.
Some researchers have suggested this long needle shape would be useful for a long-distance spacecraft, since it would minimise the chance of being hit by interstellar gas and dust as it travelled through the universe.
The body is travelling quickly through the universe, at up to 196,000mph, and looks as if it will not get wrapped up in our sun's gravity but fly right through and out of the solar system.
A statement from the 100 million dollar (£75 million) Seti project Breakthrough Listen, launched by Russian digital tech mogul Yuri Milner in 2015, said: "Researchers working on long-distance space transportation have previously suggested that a cigar or needle shape is the most likely architecture for an interstellar spacecraft, since this would minimise friction and damage from interstellar gas and dust.
"While a natural origin is more likely, there is currently no consensus on what that origin might have been, and Breakthrough Listen is well positioned to explore the possibility that Oumuamua could be an artifact."
The Breakthrough Listen team is using the Green Bank radio telescope in West Virginia, US, to study Oumuamua, which is named after the Hawaian term for "scout" or "messenger".
From 8pm UK time on December 12, the giant dish - the largest fully steerable radio telescope in the world - will "listen" to the object across four radio frequency bands spanning one to 12 gigahertz.
Lead scientist Dr Andrew Siemion, director of the Berkeley Seti Research Centre in California, said: "Oumuamua's presence within our solar system affords Breakthrough Listen an opportunity to reach unprecedented sensitivities to possible artificial transmitters and demonstrate our ability to track nearby, fast-moving objects.
"Whether this object turns out to be artificial or natural, it's a great target for Listen."
The object is currently about two astronomical units (AU) from Earth, or twice the distance between the Earth and sun.
At this distance it would take less than a minute for the Green Bank telescope to detect an omnidirectional transmitter with the power of a mobile phone.
Even if no evidence of extraterrestrial technology is found, the search could provide important information about gases surrounding Oumuamua or the presence or absence of water, say the researchers.
Breakthrough Listen aims to survey a million nearby stars and 100 nearby galaxies looking for alien signals.
Since the 1960s there have been more than 98 Seti projects around the world, none of which have turned up any convincing evidence of extraterrestrial civilisations.
Enorm sigaarvormig object in ons zonnestelsel is mogelijk buitenaards ruimteschip. Dit zeggen wetenschappers erover
Enorm sigaarvormig object in ons zonnestelsel is mogelijk buitenaards ruimteschip. Dit zeggen wetenschappers erover
Een enorm object dat pas geleden langs de aarde vloog is mogelijk een buitenaards ruimteschip, zo hebben wetenschappers gezegd.
Ze dachten in eerste instantie dat het sigaarvormige object een zeer vreemde asteroïde was. Maar ze begonnen zich al snel af te vragen of het misschien een ‘artefact’ was van een buitenaardse beschaving.
Onderzoekers die betrokken zijn bij het SETI-project zijn nu van plan een krachtige telescoop op het bizarre object te richten om te achterhalen waar het vandaan komt.
Interstellair ruimteschip
Het mysterieuze object, Oumuamua geheten, is de eerste bezoeker uit een ander deel van de Melkweg.
Het vloog in oktober langs de aarde en werd gespot door astronomen van de Universiteit van Hawaï.
Het is honderden meters lang, maar amper 80 meter breed, wat erg ongewoon is voor een asteroïde.
Dat maakt dat Oumuamua eerder de vorm heeft van een interstellair ruimteschip dan van een asteroïde.
Erg geschikt
Sommige onderzoekers hebben gezegd dat deze naaldvorm erg geschikt is voor het maken van interstellaire reizen.
Het object raast met honderdduizenden kilometers per uur door ons zonnestelsel en is inmiddels al bijna in de buurt van Jupiter.
Oumuamua heeft op geen enkel moment een komeetachtige staart gehad, wat erop wijst dat het niet gaat om een stuk ruimterots uit een nabijgelegen zonnestelsel.
Kunstmatig gemaakte verkenner
Avi Loeb van de Harvard-universiteit zei: “Hoe meer ik dit object bestudeer, hoe ongewoner het lijkt, wat me doet afvragen of dit een kunstmatig gemaakte verkenner is die is gestuurd door een buitenaardse beschaving.”
Vanavond gaan wetenschappers van het Breakthrough Listen-project, dat speurt naar buitenaards leven, Oumuamua bestuderen met de Green Bank Telescope in West Virginia.
A discovery that microbes in Antarctica can scavenge hydrogen, carbon monoxide and carbon dioxide from the air to stay alive in such extreme conditions has implications for the search for life on other planets.
Robinson Ridge, one of the two sites in Antarctica where microbes were collected.
UNSW-Sydney led scientists have discovered that microbes in Antarctica have a previously unknown ability to scavenge hydrogen, carbon monoxide and carbon dioxide from the air to stay alive in the extreme conditions.
The find has implications for the search for life on other planets, suggesting extra-terrestrial microbes could also rely on trace atmospheric gases for survival.
“Antarctica is one of the most extreme environments on Earth. Yet the cold, dark and dry desert regions are home to a surprisingly rich diversity of microbial communities,” says study senior author and UNSW scientist Associate Professor Belinda Ferrari.
“The big question has been how the microbes can survive when there is little water, the soils are very low in organic carbon and there is very little capacity to produce energy from the sun via photosynthesis during the winter darkness.
“We found that the Antarctic microbes have evolved mechanisms to live on air instead, and they can get most of the energy and carbon they need by scavenging trace atmospheric gases, including hydrogen and carbon monoxide,” she says.
The Australasian-based study, by researchers at UNSW, Monash University, the Australian Centre for Ecogenomics at the University of Queensland, GNS Science in New Zealand, and the Australian Antarctic Division, is published in the journal Nature.
Soil samples were collected from two coastal ice-free sites in different regions of eastern Antarctica. One was Robinson Ridge, 10 kilometres from Casey Station, in Wilkes Land. The other was Adams Flat, 242 kilometres from Davis Station in Princes Elizabeth Land.
Adams Flat, one of two sites in Antarctica where microbes were collected.
Photo: Phil O'Brien
“Both areas are pristine polar deserts devoid of any vascular plants,” says Associate Professor Ferrari, of the UNSW School of Biotechnology and Biomolecular Sciences.
The researchers studied the microbial DNA in the surface soil from both sites and reconstructed the genomes of 23 of the microbes that lived there, including some of the first genomes of two groups of previously unknown bacteria called WPS-2 and AD3.
They found the dominant species in the soils had genes which gave them a high affinity for hydrogen and carbon monoxide, allowing them to remove the trace gases from the air at a high enough rate to sustain their predicted energy needs and support primary production.
“This new understanding about how life can still exist in physically extreme and nutrient-starved environments like Antarctica opens up the possibility of atmospheric gases supporting life on other planets,” says Associate Professor Ferrari.
Most organisms use energy from the sun or the earth to grow. More research is needed to see if this novel use of atmospheric gases as an alternative energy source is more widespread in Antarctica and elsewhere, the scientists say.
Ontdekking op Antarctica heeft grote implicaties. Zijn deze vreemde bacteriën de sleutel tot het vinden van aliens?
Ontdekking op Antarctica heeft grote implicaties. Zijn deze vreemde bacteriën de sleutel tot het vinden van aliens?
Op Antarctica zijn micro-organismen ontdekt die kunnen overleven op niet meer dan waterstof, koolmonoxide en koolstofdioxide uit de lucht.
Er is op de Zuidpool nauwelijks of geen vloeibaar water, maandenlang komt de zon niet op en de temperaturen zijn er extreem laag. Toch wemelt het er van het leven, zo hebben onderzoekers ontdekt.
Ze verzamelden in het kustgebied van Oost-Antarctica, Robinson Ridge en Adams Flat bodemmonsters en ontdekten 23 verschillende micro-organismen.
Lucht
Er zaten onder meer bacteriën tussen die wetenschappers nog niet in het laboratorium hebben kunnen kweken.
De meeste microben die ontdekt zijn leven van gassen die ze uit de lucht halen. Door waterstof en koolmonoxide te oxideren kunnen ze energie produceren en in combinatie met koolstofdioxide zorgt dat voor organisch materiaal.
De bacteriën slagen erin te overleven met weinig zonlicht, geen aardwarmte en een extreem beperkte hoeveelheid voedingsstoffen.
Andere planeten
De onderzoekers willen nu gaan kijken of deze levenswijze ook op andere plekken op Antarctica en de aarde voorkomt.
Wat op Antarctica kan, moet ook op andere planeten kunnen, stellen ze.
Astronomen zeggen dat de aanwezigheid van water een goede indicator is van leven op andere planeten, maar de nieuwe resultaten laten zien dat er ook genoeg andere indicatoren zijn.
Opnieuw
“Exoplaneten die niet werden gezien als kandidaten voor buitenaards leven moeten mogelijk opnieuw geanalyseerd worden om bewoonbare regio’s te vinden, aldus hoofdonderzoeker Belinda Ferrari van de University of New South Wales.
Het is volgens haar mogelijk dat atmosferische gassen ook op andere planeten leven kunnen ondersteunen.
De studie is gepubliceerd in het wetenschappelijke tijdschrift Nature.
Wanneer de machthebbers op aarde de keuze hebben tussen het vriendschappelijk benaderen van ons bezoekende buitenaardsen of het ontketenen van een oorlog, zullen ze altijd voor het laatste kiezen.
Wat dat betreft is er helemaal niets veranderd sinds de tijd van het Wilde Westen, waar men eerst schoot en pas later vragen stelde.
Er zijn inmiddels talloze films en boeken verschenen over buitenaardse invasies en het is een onderwerp dat de meeste mensen ook niet onbekend zal voor komen. Daarnaast is er natuurlijk de elite en hun plannen om de mensheid te dwingen tot de New World Order door het kunstmatig creëren van een dergelijke invasie, waardoor de mensheid een gemeenschappelijke vijand heeft. Dit is het beruchte Project Blue Beam.
Maar, hoe zouden de mensen op deze aarde werkelijk reageren als er een vloot buitenaardse schepen zou worden waargenomen die linea recta richting aarde koersen? Zouden wij ze met open armen ontvangen of bombarderen met kernwapens?
Zo vertelt Nick Pope in een recent interview dat een invasie van buitenaardsen helemaal niet denkbeeldig is en dat wij er goed aan zouden doen om ons daaop voor te bereiden. Dat niet alleen, maar dat we er ook maar beter van uit kunnen gaan dat ze kwade bedoelingen hebben.
Gebaseerd op zijn ervaringen in het Engelse leger en de manier waarop men daar denkt, heeft hij een scenario gemaakt van wat hij denkt dat er zou gebeuren als er een vloot buitenaardse ruimteschepen waargenomen zou worden.
Zo denkt Nick dat buitenaardsen hier zouden komen om ons tot slaaf te maken of misschien dat ze ons beschouwen als een soort ongedierte of als interessante objecten in een dierentuin. Dat is de reden dat hij van mening is dat wij ons als aarde moeten voorbereiden op het ergste scenario en dat ze hier dus niet komen voor een vriendelijk bezoek.
Wat daarnaast een belangrijke rol zal spelen, is dat ze technologisch waarschijnlijk veel verder gevorderd zullen zijn dan wij, wat het nog een stuk lastiger, zo niet onmogelijk, maakt om een dergelijke vijand te bestrijden.
Hieronder is een nagemaakt officieel document, met daarop alle stappen die in dit geval de Engelse overheid zou ondernemen volgens Nick Pope.
Nick Pope ziet geen positief scenario wanneer buitenaardsen ons zouden bezoeken en gaat bij voorbaat uit van kwade bedoelingen. De vraag is natuurlijk als die buitenaardsen werkelijk kwaadgezind zouden zijn en beschikken over vergevorderde technologie, wat de aarde dan in 's hemelsnaam tegen een dergelijke vloot zou kunnen uitrichten?
Het is alsof een wilde uit het oerwoud met pijl en boog een Apache gevechtshelikopter tegemoet treedt.
Een andere mogelijkheid is natuurlijk dat Nick Pope nooit werkelijk het leger heeft verlaten, maar de opdracht heeft gekregen om de bevolking voor te bereiden op een nep buitenaardse invasie die uiteraard kwaadgezind moet zijn omdat we een vijand nodig hebben.
De werkelijkheid is dat wij mensen niet eens merken dat er buitenaardsen of half buitenaardsen in ons midden lopen. De werkelijkheid is dat wanneer buitenaardsen echt kwaad in de zin zouden hebben gehad wij dit allang gemerkt zouden hebben.
HEBBEN WIJ PER ONGELUK DE BINNENKANT VAN DE AARDE KAPOT GRMAAKT...
HEBBEN WIJ PER ONGELUK DE BINNENKANT VAN DE AARDE KAPOT GRMAAKT...
Zoals zo vaak staan wetenschappers voor raadsels wanneer er dingen gebeuren die niet in de handboeken staan.
Men heeft geen flauw idee waardoor het vreemde gebrom dat diep vanuit de aarde lijkt te komen, wordt veroorzaakt, maar is er misschien een reden waar niemand aan heeft gedacht?
In recente nieuwsberichten werd melding gemaakt van het feit dat wetenschappers voor een raadsel staan aangaande een vreemd gebrom dat diep vanuit de aarde lijkt te komen.
Het gebrom is niet nieuw, want ze zijn al sinds 1959 hiermee bezig en nu zijn ze er eindelijk in geslaagd om het geluid vast te leggen met behulp van seismische instrumenten op de bodem van de zee. Wij mensen kunnen dit geluid niet horen omdat de frequentie te laag is.
Ondanks dat men geprobeerd heeft een logische verklaring voor die geluiden te vinden, is er tot nu toe niet één die het kan verklaren. Het wordt niet veroorzaakt door atmosferische storingen of door golven, maar door wat dan wel?
Kenmerkend is dat het over de gehele wereld voor komt, het niet aan een bepaalde locatie gebonden is en het permanent/constant aanwezig is.
Stel dat dit geluid wordt veroorzaakt door iets wat wij als mens hebben gedaan en waar waarschijnlijk nog nooit iemand over heeft nagedacht? Grote problemen zijn wel vaker opgelost door een totaal andere invalshoek of denkwijze dan gebruikelijk.
In eerste instantie wordt iemand vaak voor knettergek verklaard, zoals ons ook nogal eens overkomt, en later blijkt het dan toch te kloppen. Een beetje in diezelfde trant zijn de gedachten welke door een lezer aan ons werden gestuurd (dank!), met een bijzonder suggestie.
Op het eerste gezicht denk je misschien: dat bestaat niet, maar het is wel een verklaring en dat is meer dan waar wetenschappers tot nu toe mee komen. Volgens deze lezer zit het antwoord misschien wel in petroleum.
In de bredere zin is petroleum een synoniem voor ruwe olie of aardolie.
Het volgende is wat de lezer schrijft:
Zoals jullie ondertussen wel weten, denk ik teveel na.
Petroleum komt zogezegd van planten en dieren die miljoenen jaren geleden gestorven zijn. Als dat zo is, waarom word er nu door de natuur/aarde geen petroleum gemaakt van dode planten en dieren die gestorven zijn?
Wat ik me dan ook afvraag, als al die planten en dieren na al die miljoenen jaren, kilometers onder de grond zitten als petroleum, hoe kan het dan, dat er zoveel dino skeletten en plantenfossielen aan de oppervlakte gevonden worden? Zouden die ook niet kilometers diep moeten zitten?
Wetenschappers breken er momenteel hun hoofd over, waar het geluid vandaan komt dat ze opvangen uit de aarde.
Ik heb jullie dit al eens gezegd, wat als petroleum dient om de binnenmantel soepel te doen draaien, rond de buitenmantel, of omgekeerd?
Dus dan zou het geluid dat wetenschappers nu horen, het resultaat kunnen zijn van het wegpompen van een beschermlaag,zoals olie uit een motor verwijderen. Of de lucht uit je banden laten lopen, op je velgen rondrijden klinkt ook niet echt goed.
Vergezocht en onmogelijk? Misschien, maar toch zeker de moeite waard om eens over dit soort dingen na te denken. Want wij hebben werkelijk geen flauw benul wat voor schade wij ondergronds aanrichten door het permanent wegpompen van olie. En ook weten we niet hoe de aarde eruit ziet, hoe deze is gemaakt, hoe deze ronddraait/of deze ronddraait. Wij denken dat te weten omdat ons dat op school wordt geleerd en omdat "experts" ons dat vertellen, maar werkelijk en hard bewijs daarvoor is echt moeilijk te vinden.
Tot dusver klinkt de verklaring van de lezer een stuk beter dan wat vaag gewauwel over atmosferische storingen. Nadenken kunnen ze wel onze lezers en dat is iets om trots op te zijn.
Bacteria discovery in Antarctica prompts rethink of humanity’s search for alien life
Bacteria discovery in Antarctica prompts rethink of humanity’s search for alien life
PLANETS that were once not even considered candidates to host alien life might be reanalysed to find habitable regions after the discovery of unique bacteria.
BACTERIA discovered in the icy continent of Antarctica is set to change the way humanity looks for alien life on other planets.
To date, our search for habitable worlds which could host alien life has been guided by what we know about life-conducive conditions on Earth. But in a new breakthrough, researchers have discovered a bacterium in Antarctica that can survive solely off chemicals in the air.
The microscopic organisms can survive just of hydrogen, carbon monoxide and carbon dioxide — opening up new possibilities about the existence of extraterrestrial life forms living in harsh conditions.
Antarctica is among the most extreme environments on our planet and it was previously thought the stresses of freezing temperatures, limited carbon, nitrogen and water availability along with strong UV radiation restricted life.
But new research reported in the journal Nature has shown the desert soils of Antarctica harbour surprisingly rich microbial communities.
“Here we provide evidence that atmospheric trace gases are the primary energy sources of two Antarctic surface soil communities,” researchers wrote.
“We propose that atmospheric H2, CO2 and CO provide dependable sources of energy and carbon to support these communities, which suggests that atmospheric energy sources can provide an alternative basis for ecosystem function to solar or geological energy sources.”
Essentially, the bacteria can survive with little sunlight, no geothermal energy and extremely limited nutrients.
The discovery was the result of DNA sequencing and analysis of soil samples collected from the icy continent.
“Although more extensive sampling is required to verify whether this process is widespread in terrestrial Antarctica and other oligotrophic habitats, our results provide new understanding of the minimal nutritional requirements for life and open the possibility that atmospheric gases support life on other planets,” researchers said.
Astronomers have historically sought out the potential presence of water when looking for planets which could support life but the bacteria findings show it’s not the only indicator }for life.
Exoplanets that were once not even considered to be candidates to hold life might be reanalysed to find habitable regions, said lead researcher Dr Belinda Ferrari.
“This new understanding about how life can still exist in physically extreme and nutrient-starved environments like Antarctica opens up the possibility of atmospheric gases supporting life on other planets,” she said.
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Has an alien probe entered our solar system? Mystery object to be scanned for alien tech
Has an alien probe entered our solar system? Mystery object to be scanned for alien tech
Is it possible that we’ve missed welcoming an alien visitor into our solar system?
According to experts, it’s possible that an alien probe from a distant solar system may have entered our solar system, disguised as a ‘comet’.
The mystery comet dubbed as Oumuamua is currently being investigated by astronomers for signs of extraterrestrial technology, as there are doubts among experts that the cigar-shaped comet isn’t just a comet.
Now, alien-hunting scientists led by Russian billionaire Yuri Milner are set to scan the enigmatic object before it sails beyond Earth’s telescopes. They are looking for signs of advanced, or alien, technology.
Oumuamua is the first interstellar object to have entered our solar system.
An artist’s rendering of the asteroid.
Photo credit: ESO/M. Kornmesser
Alien-hunting scientists say they are looking for ‘radio singles’ claiming that the mystery visitor from another solar system could, in fact, be an alien probe, exploring the cosmos.
Yuri Milner is the tycoon behind the project Breakthrough Listen—a $100 million (£75m) search for intelligent extraterrestrial life.
According to reports from the Atlantic, Mr. Milner received last week an email from one of his chief scientists, where he mentioned the enigmatic object sailing through our solar system.
“The more I study this object, the more unusual it appears, making me wonder whether it might be an artificially made probe which was sent by an alien civilization,” Professor Avi Loeb, the chair of Harvard’s astronomy department and one of Milner’s advisers on Breakthrough Listen, wrote in the email.
According to Professor Loeb, the mysterious elongated shape of the comet is odd for a space rock but perfect for a space probe traveling between solar systems.
Now, the Breakthrough Listen project has announced it will scan ‘Oumuamua this week for signs of radio signals.
‘Researchers working on long-distance space transportation have previously suggested that a cigar or needle shape is the most likely architecture for an interstellar spacecraft since this would minimize friction and damage from interstellar gas and dust,’ the research firm said in a statement.
‘While a natural origin is more likely, there is currently no consensus on what that origin might have been, and Breakthrough Listen is well positioned to explore the possibility that ‘Oumuamua could be an artifact.’
To search Oumuamua for alien technology, scientists will use the Green Bank Telescope in West Virginia.
Despite the fact that the enigmatic object is now located at twice the distance between our planet and the Sun, the Green Bank Telescope can pick up the slightest signal, if of course there is anything to pick up.
Researchers from the Breakthrough Listen project want to gather as much info as they can about the object before it leaves our solar system. In 2018, the mystery object will fly past Jupiter and will arrive at Pluto by the 2020s.
“‘Oumuamua’s presence within our solar system affords Breakthrough Listen an opportunity to reach unprecedented sensitivities to possible artificial transmitters and demonstrate our ability to track nearby, fast-moving objects,” said Listen’s Andrew Siemion, Director of Berkeley SETI Research Center. “Whether this object turns out to be artificial or natural, it’s a great target for Listen.”
Experts at Breakthrough Listen have also made it clear that even if no signal or other evidence of extraterrestrial technology is heard, Listen observations will cover portions of the radio spectrum in which the object has not yet been observed, and could provide important information about the possibility of water/ice, or the chemistry of a coma (gaseous envelope), neither of which have yet been identified.
Earlier this year, our solar system got a visitor the likes of which it has never seen. Astronomers first spotted the object on October 18th using the PanSTARRS 1 telescope in Maui. At first, the visitor appeared to be a the first known comet to originate from outside our solar system, but further observations revealed it to be much stranger. Nevertheless, it was clear that the speeding visitor came from interstellar space, so the object was given the name ‘Oumuamua from the Hawaiian meaning “a messenger from afar arriving first.” Further analysis by the European Southern Observatory found the object to be perhaps not quite a comet, not quite an asteroid, and cigar-shaped. Based on the light bouncing off of it (or lack thereof), astronomers estimate the object to be among the darkest objects ever observed in space, absorbing 96% of the light that touches its surface.
Telescopic imagery of ‘Oumuamua (dot in center) passing through our solar system.
Given the strange nature of the object, it wasn’t long before speculation ran wild that we might have just encountered our first extraterrestrial spacecraft. Avi Loeb, the chair of Harvard’s astronomy department, writes “the more I study this object, the more unusual it appears, making me wonder whether it might be an artificially made probe which was sent by an alien civilization.” In particular, scientists are struck by the long cylindrical shape of the object; ‘Oumuamua is estimated to be between 100 and 400 meters long with much smaller diameter. Such cylinder shapes are perfect for aerospace applications – just look at our own space shuttles and rockets – but are seldom seen in naturally occurring space objects like comets or asteroids which tend to be more spheroid.
But who knows how many types of weird asteroids we’ve yet to discover? There’s no telling what ‘Oumuamua could be.
With so much weirdness surrounding ‘Oumuamua, the Breakthrough Listen initiative has decided the object could be its best bet for discovering proof of an alien intelligence. Breakthrough Listen hails itself as “the largest ever scientific research program aimed at finding evidence of civilizations beyond Earth” and shares facilities and researchers with SETI. In a press release issued this morning, Breakthrough Listen announced that even if the possibility of ‘Oumuamua being an alien ‘artifact’ is low, it’s worth checking out:
Researchers working on long-distance space transportation have previously suggested that a cigar or needle shape is the most likely architecture for an interstellar spacecraft, since this would minimize friction and damage from interstellar gas and dust. While a natural origin is more likely, there is currently no consensus on what that origin might have been, and Breakthrough Listen is well positioned to explore the possibility that ‘Oumuamua could be an artifact.
Even if the chances that ‘Oumuamua could be an alien craft are tiny, any possibility greater than 0% is exciting. Could this be it? Are we finally be close to getting a glimpse of a civilization far more advanced than our own? I sure hope so. If this festering dung heap of a civilization is the best the Universe has got, maybe it’s best that we’re all alone out here. Breakthrough Listen’s observations of ‘Oumuamua begin tomorrow at the Robert C. Byrd Green Bank Telescope in West Virginia. Fingers crossed.
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'Prepare for invasion' Ex-MoD UFO chief drafts WAR PLAN for future ALIEN assault
'Prepare for invasion' Ex-MoD UFO chief drafts WAR PLAN for future ALIEN assault
A FORMER investigator for the Ministry of Defence has drafted a war plan reflecting how he believes the UK and US should respond to being attacked by aliens.
Nick Pope has stressed that it is worth preparing for an alien invasion
Nick Pope, who used to look into claims about UFOs for the Government, has suggested the UK should prepare for an alien invasion despite it being unlikely.
He predicts that an extraterrestrial attack would likely see the UK ally with NATO and the US to hit aliens with missiles.
However, Mr Pope also admitted that the UK would almost definitely be defeated by super-advanced alines in the event of a war.
His plan also stipulates that the UK may have to rely on its nuclear defences as a last resort.
The Government’s former UFO investigator said: “I based the document as much on declassified plans for the Iraq War as on my knowledge of UFOs and extraterrestrial life.
“This is exactly the sort of top-level strategic document that politicians and senior officials need in order to take the very rapid and important decisions.”
NASA does recognise the likelihood that humans will find alien life relatively soon. But it is widely believed that the chances of an alien invasion are very small.
However, Mr Pope stressed that it is worth preparing for an alien invasion because its consequences would be so devastating.
Mr Pope said: “There’s no government plan for an alien invasion, or for other scenarios where we find extraterrestrial life.
“Aliens capable of getting to Earth would clearly have technology way ahead of ours, so getting into any kind of war should be the last resort.
“We can only guess at what technology they may have, and what weaponry they might possess.
“I hope that if aliens arrive on Earth they’ll come as explorers or scientists – but that’s wishful thinking.”
Speaking to the Sun Online, Mr Pope predicted that if super-advanced aliens did arrive on earth, they would arrive as slavers, zoo keepers or pest controllers.
GETTY
The UK would almost definitely be defeated by super-advanced alines in a war, claimed Nick Pope
He said: “The biggest single thing we can do to protect ourselves is to acknowledge that there’s an issue here.
“With Nasa and others now openly talking about the possibilities of alien life, we can no longer dismiss this as sci-fi.
“Is it that hard to believe that we might not be alone, and there might be civilisations out there much older than ours, and thus more advanced?”
Flashing lights seen across the country this weekend prompted people to send videos and messages to local media asking if there were UFOs in the sky may be explained.
Joint Base Charleston told Charleston-based WLTX that those lights were a group of C-17 cargo jets that were flying in formation from Charleston to Nevada on Saturday and Sunday.
A spokesman for the base told WLTX that a group of 17 jets from the 437th Airlift Wing took off from their base around 7 p.m. Saturday, Dec. 9, and were joined on the way by other air military installations and groups, including the 82nd Airborne.
In all, there were more than 40 C-17s from 10 bases and more than 20 C-130s from three bases that partook in a training exercise involving HALO drops, or high-altitude military parachuting.
The exercise was a final training exercise for the U.S. Air Force Weapons School located at Nellis Air Force Base in Nevada, a representative said, to allow mobility Air Force students to apply what they’ve learned over the last five months.
Witnesses called and wrote into Denver TV station KUSA to say they saw a string of slow-moving lights that appeared to be flying at a low altitude.
They asked if they were UFOs, or—one of the more creative explanations— if they were Santa’s scout elves on their way back to the North Pole.“Much more creative solutions for what the answer turned out to be,” KUSA reporter Jacob Rodriguez wrote.
A video of the lights, uploaded to YouTube by Denver’s South Metro fire’s representative, has since been removed. The video was taken from his home in Littleton, Colorado, KUSA reported.
Rocket engine start-up Relativity Space shared a video of its 3D-printedrocket engine this week that’s stunning, for what it represents for the future of manufacturing and space travel.
The engine, named the Aeon 1, goes from ignition to full thrust in milliseconds. The entire video (embedded below) only last 10 seconds. While Elon Musk is working on the BFR, Relativity’s 3D printed engine is still a BFD for the future of space.
Relativity claims that the Aeon 1 engine takes far less time to create than a traditional rocket because it’s 3D printed — around one month instead of six for production, according to this chart that they shared — and has far less individual parts per engine. “Our process reduces the number of component interfaces, making full robotic automation of engine production possible,” the company says.
Relativity was founded in December 2015 by Tim Ellis and Jordan Noone, aerospace engineers and veterans of space companies Blue Origin and SpaceX, respectively. It first graduated from startup accelerator Y Combinator, before raising eight figures of funding – more than $10 million – led by Social Capital, the Palo Alto, California-based venture capital firm.
Relativity aims to decrease the price of rocket launches from $100 million to $10 million in four years, 3D print the first rocket — a 90-foot-tall, 7-foot-wide, able to carry 2,000 pounds into orbit — by 2020, and to launch that rocket into space by 2021.
“The 3D printing and automation of rockets is inevitable,” Ellis told Bloomberg in October.
Aeon-1 at full thrust, just milliseconds after igniting.
Current 3D printing technology is actually slower than traditional welding, so his “inevitability” may take some time to be realized. To get there, Relativity first had to develop its own 3D printer. Enter Stargate, a giant machine with 18-foot long arms, specifically designed with Relativity’s rockets in mind. Relativity says that it is the world’s largest 3D printer to work with metal.
If the technology continues to develop, Ellis and Noone hope to cut down the development time of a rocket from the many months – and hundreds of workers – currently required to just one month, and with minimal labor.
They’re still some way off from that goal, but that’s why the first video of their test at NASA Stennis was so exciting. Exclaimed Chamath Palihapitiya, the CEO of Social Capital: “Time to freak out, people.”
Gulf Breeze UFO phenomenon: 30 years later, sightings still divide public
Gulf Breeze UFO phenomenon: 30 years later, sightings still divide public
Troy Moon, tmoon@pnj.com
Three decades after a Gulf Breeze building contractor released eerie photos of circular UFOs to local media and set off a year-long skywatching phenomenon, the so-called "Gulf Breeze Sightings" have become part of American lore.
Ed Walters claimed he shot the photos from his yard on Nov. 11, 1987. And now, even 30 years later, people are still divided on what really happened in Gulf Breeze in late 1987 through 1988.
Even the nation's most legendary UFOlogist, fictional FBI Special Agent Fox Mulder from the 1990s hit series "X Files" weighed in on the Gulf Breeze sightings when it was revealed the character investigated the Panhandle sightings and wrote an essay on the phenomenon for Omni magazine.
"When I first saw the Gulf Breeze photos, I knew they were a hoax,'' Mulder said in a classic 1994 episode "E.B.E."
And Mulder was a person who famously always wanted to believe.
But he's not alone in concluding the controversial Walters photographs were a hoax, an opinion that became more widespread after Walters moved from his home and in 1990, the new owner found a model of a "flying saucer" wrapped in old drafting paper in the attic. The model was made out of foam pie plates, cardboard, paper and tinted plastic gel.
Walters claimed the model was planted, but most thought — and still think — Walters' photos were a hoax. (There were witnesses who alleged knowledge of the staged UFO.) News Journal reporters and photographers later used the model to stage their own UFO models that seemed identical to the ones taken by Walters.
Craig Myers was the lead reporter on the story for the Pensacola News Journal during the Gulf Breeze sightings and subsequent controversy. He wrote a dozen stories on the sightings — and specifically Walters' claims — and later wrote a book on the Gulf Breeze sightings. Today, he works as an editorial assistant for Middle Tennessee State University, where he still gives the occasional lecture on the Gulf Breeze sightings.
Myers is confident the photographs were faked by Walters, who was known as a prankster, according to news reports from the time.
"Maybe it started as a fun prank,'' Myers said. "But then it just took off and snowballed. "He's probably the smartest guy in the room in most of the rooms he walks into."
(Walters could not be reached for comment, but has always maintained the photographs he took were authentic. He also wrote a book on the topic titled "Gulf Breeze Sightings.")
And even now, there are those who believe Walters' story — and the validity of his photographs — including noted UFO researcher and physicist Bruce Maccabee, who has written numerous research papers and technical papers on the Gulf Breeze sightings.
"I think they're real,'' he said of Walters' photographs, dismissing the model found later. "I think the model is a hoax. Hoax squared."
Even if you dismiss Walters' photographs, Maccabee said, there were too many other witnesses who claimed to see UFOs in the Gulf Breeze area, and not all of them can be ignored.
"You had politicians reporting seeing objects,'' he said. "There were so many sightings that you have to account for, unless you believe there was massive collusion on the part of the residents of Gulf Breeze and Pensacola."
Danise Boone was living in Gulf Breeze at the time with her daughters, who were then 6 and 8 years old.
"My daughters and I saw something spinning just barely above the trees at dusk,'' she recalled. "We were on Central Drive off Highway 98 looking west toward the Sound side. They saw it first and came inside to get me. I couldn't believe what I was seeing, but I know I saw something in the sky that rotated. It wasn't a plane or copter. "
There are countless stories like that. Hundreds of people began watching the skies over Gulf Breeze, most congregating at watch parties at Shoreline Park. Dozens reported sightings, but no one came close to matching the clarity and proximity of Walters' photographs.
"I really don't have a good opinion on whether they're faked or not,'' said George Williams, state section director of the Florida Mutual UFO Network in Tallahassee and the field investigator who has investigated the Gulf Breeze sightings extensively. "There was so much controversy about it and MUFON went back and forth about it for years. ... But he made a model and buried it in the installation? That just doesn't sound right, but I don't know."
But no matter Walters' photos, Williams said Gulf Breeze and Pensacola remain a "UFO hotspot."
"We still get reports of interesting stuff in the area,'' he said. "And in 1987, you had hundreds of people besides Walters reporting sightings. It's always been an interesting area."
Gulf Breeze UFO Incident: Hoax or Cover-Up?
Troy Moon can be reached at tmoon@pnj.com and 850-435-8541.
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Man says he captured UFO on camera on NW Side of San Antonio
Man says he captured UFO on camera on NW Side of San Antonio
SAN ANTONIO (KABB/SBG) - A man says he caught a UFO on camera as it flew around the Northwest Side Thursday night.
The viewer told us he followed the craft at a distance all night and said he spotted three of the "massive" crafts in the air.
The witness, who identified himself as a former pilot for the Air Force, said "this was no flight path approved by the FAA" and said it wasn't a helicopter "as it made no sound."
The man said there were at least 10 vehicles in front of him that stopped on the side of the road. He told us the craft then somehow shrunk down in size to land in what he believes was a warehouse off of Interstate 10 near the Loop 410 Interchange.
The viewer said, "They were absolutely all over last night."
The internet loves an optical illusion, and it seems like people are always on the lookout for new ones. For all you people who like having your mind bent a little bit, you’re in luck: Kohske Takahashi, a psychologist at Chukyo University, Japan, has a new illusion for you. It’s called “curvature blindness,” and it may not be obvious at first.
In this illusion, which he described and explained in the journal i-Perception in November, pairs of wavy lines span the image. These waves, which have consistent peaks and valleys like sine waves, are divided into segments of dark gray and light gray and are laid over a black, white, and gray background.
Some pairs look curvy, while others look more like zig-zags, especially over the gray background. But here’s the thing: They’re all curvy. Take a look for yourself.
The zig-zag lines are actually curves, even though your eyes are blind to the curvature.
In the paper, Takahashi explains the principle behind this illusion: The lines that appear to zig-zag are the ones in which the color changes occur at the peaks and valleys. The abrupt corner created by the cutoff between the dark gray and light gray makes it so the viewer perceives the curve as a sharp angle. This perception competes with the more accurate perception of a gentle curve. He notes that this is somewhat different from a situation in which perception is incorrect, because people really do see it.
“It is notable that observers exactly ‘see’ an illusory zigzag line against a physically wavy line, rather than have an impaired perception,” he writes. “We propose that the underlying mechanisms for the gentle curve perception and those of obtuse corner perception are competing with each other in an imbalanced way and the percepts of corner might be dominant in the visual system.”
In other words, your brain might tend more toward seeing a corner when there’s confusion about whether it’s seeing a corner or a curve.
Another popular illusion involving black-and-white lines.
As we’ve seen with other optical illusions, these phenomena bug us out because we assume the way we see the world is pretty much the way it is. When we find out the way we’re seeing the world is wrong — or at least a little different from the way others see it — it unsettles us with the idea that there’s no actual consensus about reality. While this optical illusion won’t be the next dress illusion, it still makes your eyes cross with perceptual confusion.
Atmospheric pressure on Mars is just 1% that found on Earth.
Credit: YouTube.
In many respects, Mars is but a shell of its former self. About 3-4 billion years ago, it boasted a hot climate that could sustain an active hydrological cycle. There were heavy rains, rivers of flowing waters, even vast oceans. All of these require a thick atmosphere. Today, however, the atmosphere is roughly 100 times less dense than Earth’s, and the Red Planet is still continuously losing gas — expending about 100 grams of its atmosphere into outer space every second.
Solar wind is regarded as an important factor that can explain this atmospheric loss. However, a grad student at Luleå University of Technology, Sweden, has come to results that say otherwise. According to Robin Ramstad, who studied for his Master of Science degree in Engineering Physics at the university, Mars’ atmosphere is adequately protected from the effects of solar wind despite lacking an Earth-like magnetic dipole.
Thin air
Here on Earth, the motion of molten iron alloys in the planet’s outer core acts like a geodynamo which generates a massive magnetic field. Scientists call our planet’s magnetic field the magnetosphere. It extends for several tens of thousands of kilometers into space, well above the atmosphere, sheltering the planet from the charged particles of solar winds and cosmic rays that would otherwise strip away the upper atmosphere, including the ozone layer that protects the Earth from harmful ultraviolet radiation.
Earth isn’t unique in this respect. Jupiter has masses of liquid metallic hydrogen in its outer mantle, creating the largest planetary magnetic field in the solar system. Uranus generates a global magnetosphere closer to the surface, which leads to some very strange quadrupole field effects — rather than just a north and a south, there are another two poles lurking in a quadrupole field. Mars also used to have a magnetic field but lost it half a billion years after its formation.
Artist impression of Mars covered in a primitive ocean.
Credit: NASA/GSFC.
Solar wind is a stream of charged particles released from the upper atmosphere of the Sun. First described as a phenomenon in 1859, it has been observed only in the 1960s. According to one mainstream theory, it’s also responsible for the erosion of the early Martian atmosphere, which caused the greenhouse effect to collapse on the planet. At the same time, solar wind interacts with the ionized upper atmosphere, called the ionosphere, and induces a magnetosphere.
“It has long been thought that this induced magnetosphere is insufficient to protect the Martian atmosphere,” says Robin Ramstad. “However our measurements show something different.”
Left: Charged particles from the sun (the solar wind) form an induced magnetosphere round Mars, which unlike the sun does not have its own intrinsic magnetic field (artwork: Anastasia Grigoryeva) Larger file Right: Robin Ramstad points out the position of the Swedish instrument ASPERA-3 on a model of the Mars Express spacecraft (photo: Anastasia Grigoryeva)
Ramstad studied data beamed back to Earth by the Mars Express orbiter. The spacecraft has an ion mass analyzer mounted that measured ion escape from Mars since 2004.
The researcher combined and compared measurements of the ion escape under varying solar wind conditions and levels of ionizing solar radiation. His results suggest that solar wind has an effect on the ion escape rate, but it’s rather negligible. Instead, the ion escape rate is more dependent on EUV (extreme ultraviolet) radiation which has a large effect on the total amount of escaped atmosphere.
“Despite stronger solar wind and EUV-radiation levels under the early Sun, ion escape can not explain more than 0.006 bar of atmospheric pressure lost over the course of 3.9 billion years,” said Ramstad in a statement. “Even our upper estimate, 0.01 bar, is an insignificant amount in comparison to the atmosphere required to maintain a sufficiently strong greenhouse effect, about 1 bar or more according to climate models.”
According to Ramstad, what solar wind mainly does is it accelerates particles that are already escaping the planet’s gravity. It does not, however, increase the ion escape rate.
If Ramstad is indeed correct the question of where all of Mars’ water has gone will be put back into the scientific limelight.
Time travel — moving between different points in time — has been a popular topic for science fiction for decades. Franchises ranging from "Doctor Who" to "Star Trek" to "Back to the Future" have seen humans get in a vehicle of some sort and arrive in the past or future, ready to take on new adventures.
The reality, however, is more muddled. Not all scientists believe that time travel is possible. Some even say that an attempt would be fatal to any human who chooses to undertake it.
Understanding time
What is time? While most people think of time as a constant, physicist Albert Einstein showed that time is an illusion; it is relative — it can vary for different observers depending on your speed through space. To Einstein, time is the "fourth dimension." Space is described as a three-dimensional arena, which provides a traveler with coordinates — such as length, width and height —showing location. Time provides another coordinate — direction — although conventionally, it only moves forward. (Conversely, a new theory asserts that time is "real.")
Most physicists think time is a subjective illusion, but what if time is real
Einstein's theory of special relativity says that time slows down or speeds up depending on how fast you move relative to something else. Approaching the speed of light, a person inside a spaceship would age much slower than his twin at home. Also, under Einstein's theory of general relativity, gravity can bend time.
Picture a four-dimensional fabric called space-time. When anything that has mass sits on that piece of fabric, it causes a dimple or a bending of space-time. The bending of space-time causes objects to move on a curved path and that curvature of space is what we know as gravity.
Both the general and special relativity theories have been proven with GPS satellite technology that has very accurate timepieces on board. The effects of gravity, as well as the satellites' increased speed above the Earth relative to observers on the ground, make the unadjusted clocks gain 38 microseconds a day. (Engineers make calibrations to account for the difference.)
In a sense, this effect, called time dilation, means astronauts are time travelers, as they return to Earth very, very slightly younger than their identical twins that remain on the planet.
Through the wormhole
General relativity also provides scenarios that could allow travelers to go back in time, according to NASA. The equations, however, might be difficult to physically achieve.
One possibility could be to go faster than light, which travels at 186,282 miles per second (299,792 kilometers per second) in a vacuum. Einstein's equations, though, show that an object at the speed of light would have both infinite mass and a length of 0. This appears to be physically impossible, although some scientists have extended his equations and said it might be done.
A linked possibility, NASA stated, would be to create "wormholes" between points in space-time. While Einstein's equations provide for them, they would collapse very quickly and would only be suitable for very small particles. Also, scientists haven't actually observed these wormholes yet. Also, the technology needed to create a wormhole is far beyond anything we have today.
Alternate time travel theories
While Einstein's theories appear to make time travel difficult, some groups have proposed alternate solutions to jump back and forth in time.
Infinite cylinder
Astronomer Frank Tipler proposed a mechanism (sometimes known as a Tipler Cylinder) where one would take matter that is 10 times the sun's mass, then roll it into very long but very dense cylinder.
After spinning this up a few billion revolutions per minute, a spaceship nearby — following a very precise spiral around this cylinder — could get itself on a "closed, time-like curve", according to the Anderson Institute. There are limitations with this method, however, including the fact that the cylinder needs to be infinitely long for this to work.
An artist's impression of a black hole like the one weighed in this work, sitting in the core of a disk galaxy. The black-hole in NGC4526 weighs 450,000,000 times more than our own Sun.
Credit: NASA/JPL-Caltech
Black holes
Another possibility would be to move a ship rapidly around a black hole, or to artificially create that condition with a huge, rotating structure.
"Around and around they'd go, experiencing just half the time of everyone far away from the black hole. The ship and its crew would be traveling through time," physicist Stephen Hawking wrote in the Daily Mail in 2010.
"Imagine they circled the black hole for five of their years. Ten years would pass elsewhere. When they got home, everyone on Earth would have aged five years more than they had."
However, he added, the crew would need to travel around the speed of light for this to work. Physicist Amos Iron at the Technion-Israel Institute of Technology in Haifa, Israel pointed out another limitation if one used a machine: it might fall apart before being able to rotate that quickly.
Cosmic strings
Another theory for potential time travelers involves something called cosmic strings — narrow tubes of energy stretched across the entire length of the ever-expanding universe. These thin regions, left over from the early cosmos, are predicted to contain huge amounts of mass and therefore could warp the space-time around them.
Cosmic strings are either infinite or they’re in loops, with no ends, scientists say. The approach of two such strings parallel to each other would bend space-time so vigorously and in such a particular configuration that might make time travel possible, in theory.
Time machines
It is generally understood that traveling forward or back in time would require a device — a time machine — to take you there. Time machine research often involves bending space-time so far that time lines turn back on themselves to form a loop, technically known as a "closed time-like curve."
The Doctor's time machine is the TARDIS, which stands for Time and Relative Dimensions in Space.
Credit: BBCAmerica
To accomplish this, time machines often are thought to need an exotic form of matter with so-called "negative energy density." Such exotic matter has bizarre properties, including moving in the opposite direction of normal matter when pushed. Such matter could theoretically exist, but if it did, it might be present only in quantities too small for the construction of a time machine.
However, time-travel research suggests time machines are possible without exotic matter. The work begins with a doughnut-shaped hole enveloped within a sphere of normal matter. Inside this doughnut-shaped vacuum, space-time could get bent upon itself using focused gravitational fields to form a closed time-like curve. To go back in time, a traveler would race around inside the doughnut, going further back into the past with each lap. This theory has a number of obstacles, however. The gravitational fields required to make such a closed time-like curve would have to be very strong, and manipulating them would have to be very precise. [Related: Warp Speed, Scotty? Star Trek's FTL Drive May Actually Work]
Grandfather paradox
Besides the physics problems, time travel may also come with some unique situations. A classic example is the grandfather paradox, in which a time traveler goes back and kills his parents or his grandfather — the major plot line in the "Terminator" movies — or otherwise interferes in their relationship — think "Back to the Future" — so that he is never born or his life is forever altered.
If that were to happen, some physicists say, you would be not be born in one parallel universe but still born in another. Others say that the photons that make up light prefer self-consistency in timelines, which would interfere with your evil, suicidal plan.
Some scientists disagree with the options mentioned above and say time travel is impossible no matter what your method. The faster-than-light one in particular drew derision from American Museum of Natural History astrophysicist Charles Lu.
That "simply, mathematically, doesn't work," he said in a past interview with sister site LiveScience.
Also, humans may not be able to withstand time travel at all. Traveling nearly the speed of light would only take a centrifuge, but that would be lethal, said Jeff Tollaksen, a professor of physics at Chapman University, in 2012.
Using gravity would also be deadly. To experience time dilation, one could stand on a neutron star, but the forces a person would experience would rip you apart first.
The traveler leaves home, but the people he or she left behind might age or be dead by the time the traveler returns. Examples: "Interstellar" (2014), "Ikarie XB-1" (1963)
Time travel by moving through higher dimensions:
In "Interstellar" (2014), there are "tesseracts" available in which astronauts can travel because the vessel represents time as a dimension of space. A similar concept is expressed in Madeleine L'Engle's "A Wrinkle In Time" (2018, based on the book series that started in 1963), where time is folded by means of a tesseract. The book, however, uses supernatural beings to make the travel possible.
Travelling the space-time vortex:
The famous "Doctor Who" (1963-present) TARDIS ("Time And Relative Dimension In Space") uses an extra-dimensional vortex to go through time, while the travelers inside feel time passing normally.
Instantaneous time jumping:
Examples include "The Girl Who Leapt Through Time" (2006), the DeLorean from "Back To The Future" (1985), and the Mr. Peabody's WABAC machine from "The Rocky and Bullwinkle Show" (1959-64).
Time travelling while standing still:
Both the "Time Machine" (1895 book) and Hermione Granger's Time-Turner from "Harry Potter" keep the traveler still while they move through time.
Slow time travel:
In "Primer" (2004), a traveler stays in a box while time traveling. For each minute they want to go back in time, they need to stay in the box for a minute. If they want to go back a day in time, they have to stay there for 24 hours.
Traveling faster than light:
In "Superman: The Movie" (1979), Superman flies faster than light to go back in time and rescue Lois Lane before she is killed. The concept was also used in the 1980 novel "Timescape" by Gregory Benford, in which the protagonist sends (hypothetical) faster-than-light tachyon particles back to Earth in 1962 to warn of disaster. In several "Star Trek" episodes and movies, the Enterprise travels through time by going faster than light. In the comic book and TV series "The Flash," the super-speedster uses a cosmic treadmill to travel through time.
Difficult methods to categorize:
There's a rocket sled in "Timecop" (1994) that pops in and out of view when it's being used, which has led to much speculation about what's going on. There's also the Time Displacement Equipment in "The Terminator" movie series, which shows off how to fight a war in four dimensions (including time).
So is time travel possible?
While time travel does not appear possible — at least, possible in the sense that the humans would survive it — with the physics that we use today, the field is constantly changing. Advances in quantum theories could perhaps provide some understanding of how to overcome time travel paradoxes.
Watch a Brilliant Fireball Light Up the Sky in This NJ Police Dash-Cam Video
Watch a Brilliant Fireball Light Up the Sky in This NJ Police Dash-Cam Video
By Tariq Malik, Space.com Managing Editor
When Sgt. Michael Virga went out on patrol last weekend in Hamilton, New Jersey, he wasn't expecting to see something truly out-of-this-world. But thanks to a spectacular fireball, that's exactly what the officer saw.
The fireball streaked across the early-morning sky at 3:09 a.m. EST (0809 GMT) on Saturday, Dec. 2, and Virga's vehicle dash cam recorded the dazzling sight, according to a statement from the Township of Hamilton Police Department.
A dazzling fireball streaks across the sky in this still from the dash-cam video of Sgt. Michael Virga, of the Township of Hamilton Police Department in New Jersey, on Dec. 2, 2017.
Credit: Township of Hamilton Police Department
The fireball was a bolide, a meteor that explodes in a brilliant flash as it plunges through Earth's atmosphere.
In a Twitter statement, the American Meteor Society said it received 133 separate reports from spectators who witnessed the fireball across Pennsylvania and New Jersey. Sightings were also reported from 10 other states (New Hampshire, New York, Rhode Island, Connecticut, Delaware, Virginia, West Virginia, Maryland, Ohio and Massachusetts) and Washington, D.C., the AMS reported.
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Over mijzelf
Ik ben Pieter, en gebruik soms ook wel de schuilnaam Peter2011.
Ik ben een man en woon in Linter (België) en mijn beroep is Ik ben op rust..
Ik ben geboren op 18/10/1950 en ben nu dus 73 jaar jong.
Mijn hobby's zijn: Ufologie en andere esoterische onderwerpen.
Op deze blog vind je onder artikels, werk van mezelf. Mijn dank gaat ook naar André, Ingrid, Oliver, Paul, Vincent, Georges Filer en MUFON voor de bijdragen voor de verschillende categorieën...
Veel leesplezier en geef je mening over deze blog.