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...
13-07-2022
NASA’s Webb Reveals Steamy Atmosphere of Distant Planet in Detail
NASA’s Webb Reveals Steamy Atmosphere of Distant Planet in Detail
Webb’s enormous mirror, precise instruments joined forces to capture most detailed measurements of starlight filtering through atmosphere of a planet outside our solar system to date
The spectrum of light – which contains information about the makeup of a planetary atmosphere 1,150 light-years away – reveals distinct signature of water
The strength of the signal that Webb detected hints at the significant role the telescope will play in the search for potentially habitable planets in coming years
Webb’s powerful new view also shows evidence of haze and clouds that previous studies of this planet did not detect
NASA’s James Webb Space Telescope has captured the distinct signature of water, along with evidence for clouds and haze, in the atmosphere surrounding a hot, puffy gas giant planet orbiting a distant Sun-like star.
The observation, which reveals the presence of specific gas molecules based on tiny decreases in the brightness of precise colors of light, is the most detailed of its kind to date, demonstrating Webb’s unprecedented ability to analyze atmospheres hundreds of light-years away.
While the Hubble Space Telescope has analyzed numerous exoplanet atmospheres over the past two decades, capturing the first clear detection of water in 2013, Webb’s immediate and more detailed observation marks a giant leap forward in the quest to characterize potentially habitable planets beyond Earth.
WASP-96 b is one of more than 5,000 confirmed exoplanets in the Milky Way. Located roughly 1,150 light-years away in the southern-sky constellation Phoenix, it represents a type of gas giant that has no direct analog in our solar system. With a mass less than half that of Jupiter and a diameter 1.2 times greater, WASP-96 b is much puffier than any planet orbiting our Sun. And with a temperature greater than 1000°F, it is significantly hotter. WASP-96 b orbits extremely close to its Sun-like star, just one-ninth of the distance between Mercury and the Sun, completing one circuit every 3½ Earth-days.
The combination of large size, short orbital period, puffy atmosphere, and lack of contaminating light from objects nearby in the sky makes WASP-96 b an ideal target for atmospheric observations.
On June 21, Webb’s Near-Infrared Imager and Slitless Spectrograph (NIRISS) measured light from the WASP-96 system for 6.4 hours as the planet moved across the star. The result is a light curve showing the overall dimming of starlight during the transit, and a transmission spectrum revealing the brightness change of individual wavelengths of infrared light between 0.6 and 2.8 microns.
While the light curve confirms properties of the planet that had already been determined from other observations – the existence, size, and orbit of the planet – the transmission spectrum reveals previously hidden details of the atmosphere: the unambiguous signature of water, indications of haze, and evidence of clouds that were thought not to exist based on prior observations.
A transmission spectrum is made by comparing starlight filtered through a planet’s atmosphere as it moves across the star to the unfiltered starlight detected when the planet is beside the star. Researchers are able to detect and measure the abundances of key gases in a planet’s atmosphere based on the absorption pattern – the locations and heights of peaks on the graph. In the same way that people have distinctive fingerprints and DNA sequences, atoms and molecules have characteristic patterns of wavelengths that they absorb.
The spectrum of WASP-96 b captured by NIRISS is not only the most detailed near-infrared transmission spectrum of an exoplanet atmosphere captured to date, but it also covers a remarkably wide range of wavelengths, including visible red light and a portion of the spectrum that has not previously been accessible from other telescopes (wavelengths longer than 1.6 microns). This part of the spectrum is particularly sensitive to water as well as other key molecules like oxygen, methane, and carbon dioxide, which are not immediately obvious in the WASP-96 b spectrum but which should be detectable in other exoplanets planned for observation by Webb.
Researchers will be able to use the spectrum to measure the amount of water vapor in the atmosphere, constrain the abundance of various elements like carbon and oxygen, and estimate the temperature of the atmosphere with depth. They can then use this information to make inferences about the overall make-up of the planet, as well as how, when, and where it formed. The blue line on the graph is a best-fit model that takes into account the data, the known properties of WASP-96 b and its star (e.g., size, mass, temperature), and assumed characteristics of the atmosphere.
The exceptional detail and clarity of these measurements is possible because of Webb’s state-of-the-art design. Its 270-square-foot gold-coated mirror collects infrared light efficiently. Its precision spectrographs spread light out into rainbows of thousands of infrared colors. And its sensitive infrared detectors measure extremely subtle differences in brightness. NIRISS is able to detect color differences of only about one thousandth of a micron (the difference between green and yellow is about 50 microns), and differences in the brightness between those colors of a few hundred parts per million.
In addition, Webb’s extreme stability and its orbital location around Lagrange Point 2 roughly a million miles away from the contaminating effects of Earth’s atmosphere makes for an uninterrupted view and clean data that can be analyzed relatively quickly.
The extraordinarily detailed spectrum – made by simultaneously analyzing 280 individual spectra captured over the observation – provides just a hint of what Webb has in store for exoplanet research. Over the coming year, researchers will use spectroscopy to analyze the surfaces and atmospheres of several dozen exoplanets, from small rocky planets to gas- and ice-rich giants. Nearly one-quarter of Webb’s Cycle 1 observation time is allocated to studying exoplanets and the materials that form them.
This NIRISS observation demonstrates that Webb has the power to characterize the atmospheres of exoplanets—including those of potentially habitable planets—in exquisite detail.
Image credit: NASA, ESA, CSA, and STScI
The James Webb Space Telescope is the world's premier space science observatory. Webb will solve mysteries in our solar system, look beyond to distant worlds around other stars, and probe the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and CSA (Canadian Space Agency).
NASA Headquarters oversees the mission for the agency’s Science Mission Directorate. NASA’s Goddard Space Flight Centerin Greenbelt, Maryland, manages Webb for the agency and oversees work on the mission performed by the Space Telescope Science Institute, Northrop Grumman, and other mission partners. In addition to Goddard, several NASA centers contributed to the project, including the agency’s Johnson Space Center in Houston; Jet Propulsion Laboratory (JPL) in Southern California; Marshall Space Flight Center in Huntsville, Alabama; Ames Research Center in California’s Silicon Valley; and others.
NIRISS was contributed by the Canadian Space Agency. The instrument was designed and built by Honeywell in collaboration with the Université de Montréal and the National Research Council Canada.
Download full-resolution, uncompressed versions and supporting visuals of this and other "Webb First Images" from the Space Telescope Science Institute:
SPECTACULAIR: DIT ZIJN DE FOTO’S VAN DE JAMES WEBB-TELESCOOP (WE KIJKEN 13 MILJARD JAAR TERUG IN DE TIJD)
SPECTACULAIR: DIT ZIJN DE FOTO’S VAN DE JAMES WEBB-TELESCOOP (WE KIJKEN 13 MILJARD JAAR TERUG IN DE TIJD)
Jeannette Kras
Daar zijn ze dan: de eerste vijf kleurenfoto’s van de James Webb-telescoop. De opvolger van Hubble stelt niet teleur. De afbeeldingen, waarmee je ’13 miljard jaar terug in de tijd kunt kijken’, zijn indrukwekkend.
NASA lanceerde op eerste kerstdag vorig jaar samen met het Europese en Canadese Ruimteagentschap (de ESA en de CSA) de James Webb-ruimtetelescoop, die de ‘verste en scherpste infraroodbeelden van het vroege universum’ kan maken. James Webb produceert niet alleen vele malen scherpere foto’s dan zijn voorganger Hubble, maar doet dat ook veel sneller.
Revolutionair “De James Webb-telescoop gaat ons zo veel antwoorden geven. Zelfs antwoorden op vragen die we nog niet eens kennen”, vertelt Günther Hasing, wetenschapsdirecteur van de ESA, enthousiast tijdens de onthulling van de foto’s. Josef Aschbacher, directeur-generaal van de ESA vult aan: “De ontwikkeling van de James Webb-telescoop is meer dan alleen wetenschap. Het is bovenal een fantastische samenwerking van internationale ruimtevaartorganisaties.”
“De nieuwe James Webb-telescoop is revolutionair, een enorme sprong voorwaarts”, vindt ook NASA-topman Bill Nelson. “We gaan dingen zien, die ik nooit voor mogelijk had gehouden. Met de infraroodtechnologie kijken we dwars door stofwolken heen naar sterrenstelsels en zwarte gaten. Het heelal is 13,8 miljard jaar oud. Wij kunnen nu 13,5 miljard jaar terug in de tijd kijken. Dit licht heeft al die tijd met 300.000 kilometer per uur door het heelal gereisd en valt nu op onze nieuwe telescoop. Onvoorstelbaar, maar waar.”
Nederlands tintje De feestelijke onthulling van de foto’s heeft ook een Nederlands tintje. Hoogleraar Moleculaire Astrofysica Ewine van Dishoeck (Sterrewacht Leiden, NOVA) vertelt tijdens een persbijeenkomst dat NOVA (de Nederlandse Onderzoeksschool Voor Astronomie) een bijdrage heeft geleverd aan de hardware van het MIRI (Mid-Infrared Instrument). Dit is een camera en een spectrograaf die middellange tot lange infraroodstraling observeert. MIRI neemt in het bijzonder licht van langere golflengtes waar. “Het was een spannend moment of MIRI wel koud zou worden. Anders zouden we alleen maar ruis kunnen meten”, vertelt Van Dishoeck. “Dat dat lukte, was voor ons een enorme mijlpaal.” NOVA was verantwoordelijk voor de hoofdoptiek van de MIRI-spectrometer. Ook onder meer TNO werkte mee.
Een zandkorrel Met hulp van MIRI konden de eerste foto’s tot stand komen, waarvan de Amerikaanse president Joe Biden gisteren de eerste al onthulde. “Deze afbeelding omvat een deel van het heelal ter grootte van een zandkorrel op armlengte. Het is een piepkleine splinter van het enorme universum”, zei Bill Nelson van de NASA. “Deze missie is mogelijk gemaakt door menselijk vernuft.” Het publiek over de hele wereld was onder de indruk van het beeld van dat verre cluster van sterrenstelsels.
Wetenschap met het blote oog Maar zijn zulke foto’s nu enkel voor het publiek mooi of hebben sterrenkundigen er ook echt wat aan? De aanwezige wetenschappers op de persbijeenkomst stellen dat die foto’s ook voor de wetenschap van grote waarde zijn. “Voor je een spectrum kunt nemen, moet je het eerst vinden. Daar zijn die beelden wel voor nodig”, aldus Paul van der Werf, hoogleraar Extragalactische Astrofysica bij de Sterrewacht van de Universiteit Leiden. “Je moet een gebied aan de hemel afzoeken, daar zijn die beelden absoluut noodzakelijk voor. Ze moeten zo gevoelig en groot mogelijk zijn. Dat het een mooi plaatje is, is mooi meegenomen, maar dat is natuurlijk niet waarom we het doen. Er zijn duidelijke wetenschappelijke redenen, zeker met diepe velden (deep fields). Je moet de context hebben. Je kunt niet zomaar je spectrum op een punt richten en weten wat er aan de hand is.” Spectra zijn (elektromagnetische) golven, die worden opgepikt door de telescoop, die ze weer omzet in beeld. Van Dishoeck vult aan: “Het is een multi-color-image. Dan kun je direct met je oog al wetenschap doen. Als je een plaatje neemt in verschillende kleuren geeft dat al een heleboel informatie.”
De foto’s Maar waar het vandaag om draait, zijn natuurlijk de foto’s zelf. “De vijf foto’s zijn het resultaat van een week scannen door de Webb-ruimtetelescoop. Over een week hebben we dubbel zoveel data en foto’s. Dit gaat het hele jaar zo door”, klinkt het verheugd.
SMACS 0723 Over de eerste foto, van SMACS 0723, schreven we vanochtend al. De afbeelding toont een cluster van sterrenstelsels, zoals het er 4,6 miljard jaar geleden uitzag. De totale massa van alles wat in dit cluster aanwezig is, zorgt voor een kromming van het licht als ware het een vergrootglas: het licht van veel verder gelegen, zwakkere sterrenstelsels wordt erdoor vergroot. Het beeld werd in 12,5 uur gemaakt door NIRCam, de camera van James Webb. De sterrenstelsels op de foto stralen licht uit dat in sommige gevallen 13 miljard jaar oud is. Daarmee zijn het de oudste objecten die ooit zijn vastgelegd.
Foto: NASA, ESA, CSA, en STScI
De Carinanevel Hieronder zie je een spiksplinternieuwe afbeelding van de Carinanevel, die 7600 lichtjaar van de aarde is verwijderd. In NGC3372, zoals de nevel officieel heet, staan twee van de zwaarste en helderste sterren van het melkwegstelsel.
De Webb-telescoop laat de Carinanevel zien als nooit tevoren. Vele sterren die nooit eerder zijn waargenomen, staan nu scherp op de foto. We zien jonge sterren die gaswolken uitstoten. Er is veel gas en stof te zien, waar nieuwe sterren worden gevormd. Elk stipje op de foto is een ster, net als onze zon. Hubble maakte al prachtige foto’s van de Carinanevel, maar de Webb maakt er een nog veel gedetailleerder en mooier plaatje van.
Foto: NASA, ESA, CSA, en STScI
WASP-96b James Webb maakte ook een spectrum van exoplaneet WASP-96b. Deze planeet staat op 1150 lichtjaar van de aarde en draait in iets minder dan 3,5 dag om zijn moederster. Bijzonder is dat de atmosfeer van de exoplaneet wolkenvrij is. De exoplaneet is ongeveer net zo groot als Jupiter en erg heet. Spectrumanalyse van deze planeet maakt duidelijk dat er veel water aanwezig is in de vorm van waterdamp.
Exoplaneet WASP 96b
foto: NASA, ESA, CSA, en STScI
NGC 3132 Op 2000 lichtjaar van de aarde vinden we een planetaire nevel, die in het Engels ook wel Eight-burst Nebula wordt genoemd. De nevel (een groeiende gaswolk rond een stervende ster) breidt zich momenteel uit met 14,5 kilometer per seconde. Webb geeft astronomen een schat aan nieuwe informatie over de samenstelling van planetaire nevels zoals NGC 3132. Uit wat voor moleculen is deze gigantische gaswolk bijvoorbeeld opgebouwd?
foto: NASA, ESA, CSA, en STScI
Kwintet van Stephan Dit is een groep sterrenstelsels in het sterrenbeeld Pegasus. Het dichtstbijzijnde is NGC 7320C op 39 miljoen lichtjaar afstand. De overige vier sterrenstelsels liggen veel verder weg, namelijk op 290 miljoen lichtjaar van de aarde. Er is een actief zwart gat in deze foto verscholen. De moleculaire stoffen die in de buurt rondvliegen, kunnen worden geïdentificeerd door spectrumanalyse van de Webb-telescoop.
It was meant to be a momentous celebration of decades of research coming to fruition.
We really can't overstate how important it was when NASA unveiled the first stunning set of images from its uber-expensive James Webb Space Telescope, a day decades in the making.
But while the results were indeed absolutely mind blowing, we wish we could say the same thing about the livestream itself.
In true NASA fashion, the space agency's announcement was a hot mess — to put it lightly — with host astronomer Michelle Thaller visibly struggling to keep the show rolling and coherent.
Ironic
Twitter users were quick to catch on to the irony.
"Deploying a giant infrared space telescope: easy," SpaceNews senior writer Jeff Foust tweeted. "Coordination multiple video feeds worldwide: not so easy."
For much of the hour-long presentation, Thaller struggled to transition from one section of the presentation to the next, often interrupted by swelling music at inopportune of times.
On more than one occasion, audio feeds from NASA HQ didn't cut out, allowing us to get glimpses of panicked technicians struggling to keep the show together. At another moment, we could hear what sounded like the voices of audio techs loudly whispering on a hot mic.
Who's There?
Audio feeds from remote teams around the world were basically nonexistent until the presentation was already well underway. With the absence of their microphone feeds, Thaller was left to awkwardly breathe into her microphone while we got to watch some of the brightest minds in astronomy sheepishly stare into the camera.
NASA's solution — they clearly saw this IT travesty coming from a mile away — was to have a backup crew of experts ready to personally run Thaller through the images in the studio. But even this backup plan posed a bit of a challenge.
In short, NASA's "superstar media producers," as Thaller referred to them at the end of the stream, should probably go back to the drawing board.
Good thing scientists don't have to rely on NASA livestreams to do their work — if so, the Webb would probably be a smoldering wreck on the launchpad.
NASA toont nieuwe spectaculaire beelden van James Webb-telescoop: bekijk ze hier
NASA toont nieuwe spectaculaire beelden van James Webb-telescoop: bekijk ze hier
NASA heeft nieuwe beelden vrijgegeven van de James Webb-ruimtetelescoop. De indrukwekkende beelden volgen op de historische eerste kleurenfoto van de telescoop, die gisterenavond al werd gedeeld door de Amerikaanse ruimtevaartorganisatie. Bekijk hieronder de spectaculaire beelden.
Op de nieuwe beelden zien we onder meer Stephan’s Quintet, een visuele groepering van vijf sterrenstelsels, in een heel nieuw licht. Het is het grootste beeld dat de telescoop tot nu toe heeft gemaakt, ongeveer zo groot als een vijfde van de diameter van de maan. Het bevat meer dan 150 miljoen pixels en is opgebouwd uit bijna 1.000 afzonderlijke beeldbestanden.
De ‘zuidelijke Ringnevel’, gefotografeerd door twee Webb-instrumenten (links door Nircam op wat kortere golflengten en rechts door Miri op langere golflengten), is een langzaam uitdijende schil van sterrengas op een afstand van ongeveer 2.000 lichtjaar (één lichtjaar is zo’n 9,5 biljoen kilometer).
De nevel is duizenden jaren geleden uitgestoten door de stervende ster in het centrum. In zo’n afkoelende nevel ontstaan minuscule stofdeeltjes en verschillende moleculen, waaronder koolwaterstofverbindingen die aan de basis liggen van het leven. Over een kleine vijf miljard jaar zal ook onze eigen zon opzwellen tot een rode reuzenster en net zo’n uitdijende nevel het heelal in blazen.
Het lijken oranje-blauwe penseelstreken op een impressionistisch schilderij, maar het zijn wervelende gas- en stofwolken in de Carinanevel, op 7.600 lichtjaar afstand. In de koude, stoffige krochten van dit nevelcomplex ontstaan nieuwe, zware sterren; een geboorteproces dat door Webb in detail bestudeerd kan worden, omdat infrarode straling dwars door de meeste stofwolken heendringt.
Net als op de andere Webb-foto’s zijn de kleuren niet echt (het menselijk oog kan geen infrarode straling waarnemen); met verschillende kleuren worden verschillende infrarode golflengten in beeld gebracht.
‘Stephan’s Quintet' heet deze groep van vijf sterrenstelsels op 290 miljoen lichtjaar afstand, naar de Franse astronoom Édouard Stephan, die het groepje in 1877 ontdekte. Vier van de vijf stelsels zijn gevangen in een onderlinge zwaartekrachtdans. Getijdenkrachten leiden tot schokgolven en het ontstaan van talloze nieuwe sterren in losgerukte en weggeslingerde slierten van gas en stof, die op de infrarode Webb-foto’s goed zichtbaar zijn.
De eerste foto van de nieuwe James Webb Space Telescope (JWST) is gisteren vrijgegeven. De Amerikaanse president Joe Biden deelde maandagavond rond 23 uur Belgische tijd de eerste kleurenafbeelding van duizenden sterrenstelsels die miljarden jaren oud zijn. “De James Webb-telescoop gaat ons veel leren over het universum, bijvoorbeeld over wat er net na de big bang gebeurde”, vertelt wetenschapsexpert Martijn Peters in de studio van HLN LIVE.
De JWST werd op kerstdag 2021 de ruimte in gestuurd en legde daarna een afstand van 1,5 miljoen kilometer af. De telescoop kon deze foto vastleggen na een intens proces van afstellen en configureren. Zo moesten de kenmerkende gouden spiegels van de telescoop in de ruimte uitgevouwen worden en stuk per stuk in de juiste hoek worden gezet. De instrumenten werden bovendien afgekoeld, één ervan tot een temperatuur van 266 graden Celsius onder nul.
“Nieuwe kijk op ons universum”
Als eerste test werd de James Webb gericht op een stukje hemel dat de naam SMACS 0723 draagt. “Nu kijken we naar een stukje aan de hemel dat ongeveer een zandkorreltje groot lijkt en daarin zien we plots duizenden sterrenstelsels verschijnen”, vertelt Peters bij HLN LIVE.
Het waren de Amerikaanse president Joe Biden en vicepresident Kamala Harris die dit eerste beeld van de Webb-telescoop onthulden tijdens een persconferentie. Biden noemde het beeld en het werk van de telescoop “een nieuwe kijk op ons universum”.
Sterrenstelsels die nooit eerder werden waargenomen
SMACS 0723 bevat sterrenstelsels die zo massief zijn dat ze licht afbuigen. Daardoor zijn er objecten te zien die nog verder verwijderd liggen van ons. SMACS 0723 is vanop de zuidelijke hemisfeer van onze planeet (en dus niet vanuit België) te zien in het sterrenbeeld Vliegende Vis of Volans.
Vele van de duizenden sterrenstelsels die te zien zijn op de foto werden voor het eerst vastgelegd door de JWST. Het gaat in sommige gevallen om de zwakste infrarode straling die we ooit hebben waargenomen. De foto is een samenstelling van verschillende beelden die de JWST heeft vastgelegd op verschillende golflengtes. Het resultaat was een composiet in grijswaarden, die met filters werden ingekleurd.
“Grote impact binnen de wetenschap”
Dat de JWST succesvol gelanceerd en ingesteld werd zonder al te veel problemen, is op zich al een mirakel te noemen. Wat we vanaf nu dankzij de ruimtetelescoop kunnen waarnemen, zal voor een hoop nieuwe kennis zorgen. “Alle wetenschappelijke data gaat binnenkort vrijgegeven worden en onderzoekers gaan er los op gaan. Ze gaan het gebruiken om te achterhalen wat daar gebeurt, hoe bepaalde sterren zich vormen en wat er gebeurde na de oerknal. Er gaat massaal veel onderzoek gedaan worden op deze data”, vertelt Peters.
De JWST kan ook licht waarnemen dat bijna net zou oud is als het universum zelf. “Dat konden we met de Hubble-telescoop niet waarnemen, maar wel met de speciale instrumenten van de James Webb-telescoop”, aldus Peters.
Daarnaast zullen we naar de geboorte van sterren kunnen kijken, maar ook naar planeten rond andere sterren dan onze zon. Dat kan helpen in de zoektocht naar leven op andere plaatsen, vertelt onze wetenschapsexpert: “We gaan ook kunnen te weten komen of planeten atmosferen hebben die leefbaar zijn en of er de bouwstenen aanwezig zijn voor leven.”
Sterrenkundigen zijn opgetogen over de eerste beelden. “Het is fantastisch spannend allemaal, en ook heel emotioneel”, aldus Ewine van Dishoeck van de Sterrewacht in Leiden. Van Dishoeck is de Europese hoofdonderzoeker van Miri, een van de waarnemingsinstrumenten van Webb.
Opvolger van Hubble-ruimtetelescoop
De JWST is honderd keer gevoeliger dan de beroemde ruimtetelescoop Hubble, die zijn einde nadert. De James Webb kan zo licht detecteren dat één miljard jaar ouder is dan wat de Hubble kon vastleggen. Ook vallen er verschillende objecten te onderscheiden die op foto’s van de Hubble eruit zagen als één object.
Om dit eerste beeld te creëren, verzamelde de Webb-telescoop gedurende 12,5 uur licht van verschillende golflengten. De Hubble had weken de tijd nodig om foto’s te maken van de SMACS 0723-cluster aan sterrenstelsels.
De James Webb heeft achttien zeshoekige spiegels die aan elkaar zitten, maar los van elkaar kunnen bewegen om scherp te stellen. De spiegel is gemaakt van beryllium, met daarbovenop een miniem laagje goud van 100 nanometer dik. Dat is duizend keer zo dun als een menselijk haar of een vel papier. Beryllium is een onedel metaal dat licht en sterk is en goed bestand tegen extreme kou. Het goud zorgt ervoor dat de spiegel beter in staat is infrarood licht te zien.
Het Amerikaans-Europees-Canadese project kost in totaal ongeveer 8 miljard euro. James Webb zou tot 20 jaar operationeel kunnen blijven.
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They’re Here! Check out the First Images from the James Webb Space Telescope!
They’re Here! Check out the First Images from the James Webb Space Telescope!
This is it! Today, people worldwide were treated to the first images acquired by James Webb! After years of delays, we are finally seeing the sharpest images of the Universe taken by the most powerful telescope ever deployed. The world was given a sneak peek yesterday when President Biden, VP Kamala Harris, NASA Administrator Bill Nelson, and other NASA officials released the deepest and sharpest infrared image of the Universe to date. But at 10:30 Eastern (07:30 Pacific), all the remaining first images were released!
The event was live-streamed by NASA TV, took place at NASA Goddard Spaceflight Center, and featured live streams from partner institutes in Canada, Europe, and across the U.S. This allowed the science teams that were responsible for the images to present them and explain how they illustrate the different science operations the JWST will perform throughout its mission.
Deep Field
The first image, Deep Field SMACS 0723, was presented by Jane Rigby, the Operations Project Scientist for the JWST mission. This image, which was revealed yesterday, showed a massive galaxy cluster and the gravitational lenses they produced (which magnified fainter galaxies in the distance). As Rigby explained, the images show galaxies as they appeared 13 billion years ago and spectra obtained by Webb‘s Near-Infrared Spectrograph (NIRSpec).
The Deep Field SMACS 0723 image taken by the James Webb Space Telescope. Credit: NASA/ESA/CSA/STScI
Another interesting tidbit was the speed at which Webb acquired this image and the spectra, which took mere hours. For comparison, Rigby explained that it took Hubble weeks to obtain a deep field image of this same galaxy cluster. The depth, detail, and speed with which Webb acquired this image showcase how the observatory is a fitting successor to the venerable Hubble and builds on its incredible legacy!
Exoplanet Atmosphere
The second image consisted of spectra obtained by Webb’sNear InfraRed Imager and Slitless Spectrograph (NIRISS) from WASP-96b, a hot gas giant located about 1,000 light-years away. The Canadian Space Agency (CSA), which provides the NIRISS instrument, was originally intended to present the image. Due to a technical issue, the presentation was made by Knicole Colón, NASA’s Deputy Project Science for Exoplanet Science at NASA Goddard.
The spectrographic image shows the composition of WASP-9b’s atmosphere, which showed a significant amount of water vapor. As Colón explained, the data was obtained during a transit, when WASP-96b passed in front of its star (relative to Webb’s position). As light passed through the atmosphere, Webb characterized it using its advanced spectrographs. This image effectively showcases how Webb will characterize the atmospheres of planets, be they beyond the Solar System or inside it.
A transmission spectrum based on data acquired by Webb’s Near-Infrared Imager and Slitless Spectrograph (NIRISS). Credit: NASA/ESA/CSA/STScI
“A Dying Star”
Next was the side-by-image of the Southern Ring planetary nebula presented by the Space Telescope Science Institute (STSI). The image shows the expanding cloud of gas surrounding a dying star (located approximately 2,000 light-years away from Earth) as it appeared to both the NIRCam and MIRI. The resulting images provide the most detailed view of this iconic nebula and the stellar remnant at its core – and in multiple wavelengths.
In the NIRCam image, a white dwarf appears to the lower left of the central white dwarf (which is much brighter) and is partially hidden by a diffraction spike. The same star appears brighter, larger, and redder in the Mid-Infrared Instrument (MIRI) image, a visual effect caused by the thick layers of dust enshrouding the star. An easter egg was a background galaxy visible on the far left side of the image (seen through a relatively thin patch of nebular dust).
This side-by-side comparison shows observations of the Southern Ring Nebula in near-infrared light, at left, and mid-infrared light, at right, from NASA’sWebb Telescope. Credit: NASA/ESA/CSA/STScI
Infrared Galaxies
The fourth image was a composite of Stephan’s Quintet, a compact galaxy group located 290 million light-years away in the constellation Pegasus. Presented by the ESA science team at Europe’s Spaceport, the image beautifully illustrates the composition and tidal interactions of four galaxies in the process of merging. It was obtained by the Near-Infrared Spectrograph (NIRSpec) and MIRI instruments, which captured light in multiple wavelengths and provided never-before-seen details about this galaxy group.
These include sparkling clusters of millions of young stars, starburst regions where new stars have just formed, and sweeping tails of gas, dust, and stars being pulled back and forth by the gravitational interaction of the galaxies. Most dramatically, Webb‘s MIRI instrument also captured the huge shock waves (the red and gold region surrounding the central pair of galaxies) produced by NGC 7318B smashing through the cluster.
A mosaic of Stephan’s Quintet captured by Webb’s Near-Infrared Camera (NIRCam) and Mid-Infrared Instrument (MIRI). Credit: NASA/ESA/CSA/STScI
Star Birth
Amber Straughn, the Deputy Project Scientist for the JWST mission at NASA Goddard, presented the fifth and final image. The image features the Carina Nebula, one of the largest and brightest nebulae in the sky, located about 7,600 light-years away in the southern constellation Carina. Once again, this nebula was previously observed by Hubble, which provided a breathtaking look at a prominent star-forming region. But thanks to Webb‘s superior infrared imaging capabilities, this new image captures details that were previously invisible to astronomers.
For starters, there’s the central feature known as the “cosmic cliff,” which looks like a craggy mountainside. This is, in reality, the edge of the gigantic gaseous cavity carved within the nebula by the intense ultraviolet radiation and stellar winds from the extremely massive, hot, young stars located in the center of the bubble (at the top of the image). This image also reveals previously-unseen newborn stars, a more detailed look at the gas and dust of the nebula, and the interaction between solar wind and gas clouds.
Thanks to the crisp resolution and unparalleled sensitivity of Webb‘s Near-Infrared Camera (NIRCam), this image is already providing fresh insight into how “stellar nurseries” work and how new stars are born.
Image of the Carina Nebula (NGC 3324) captured by Webb’s Near-Infrared Camera (NIRCam), Credit: NASA/ESA/CSA/STScI
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The development of this next-generation telescope officially began in 1996 as an intended successor to the Hubble Space Telescope (HST). These efforts were largely motivated by the success of the Hubble Deep Fields campaign, which provided the deepest views of the Universe to date. They were further motivated by the Cosmic Background Explorer (COBE), which mapped the Cosmic Microwave Background (CMB) from 1989 to 1993. In short, these two surveys allowed astronomers to observe the early Universe and how it all began with the Big Bang.
Now they wanted to see what happened in-between, which included the formation of the first stars and galaxies and how they evolved into the large-scale cosmic structures we see today. After a redesign, multiple tests, delays, cost overruns, and the COVID pandemic, Webb finally launched from Europe’s Spaceport in French Guyana on Christmas Day in 2021. Once it reached orbit, the mission team spent weeks unfolding its sunshield, deploying and aligning its primary mirror, cooling the observatory to operational temperature, and navigating Webb to its orbit – about 1.5 million km (930,000 mi) from Earth.
Since then, the JWST has been conducting science operations and observing different cosmic objects and phenomena. These images provide a good preview of what we can expect in the coming years as more and more images are released. The event wrapped up with Administrator Bill Nelson praising the teams responsible for James Webb and the international cooperation that made it possible. He finished by repeating the words of the late and great Carl Sagan:
“Somewhere, something incredible is waiting to be known.”
New James Webb Space Telescope Images Will Bring You To Tears July 2022
New James Webb Space Telescope Images Will Bring You To Tears July 2022
NASA has a provided a tantalizing teaser photo ahead of the highly-anticipated release next week of the first deep-space images from the James Webb Telescope — an instrument so powerful it can peer back into the origins of the universe. The $10 billion observatory — launched in December last year and now orbiting the Sun a million miles (1.5 million kilometers) away from Earth — can look where no telescope has looked before thanks to its enormous primary mirror and instruments that focus on infrared, allowing it to peer through dust and gas.
The first fully formed pictures are set for release on July 12, but NASA provided an engineering test photo on Wednesday — the result of 72 exposures over 32 hours that shows a set of distant stars and galaxies. The image has some “rough-around-the-edges” qualities, NASA said in a statement, but is still “among the deepest images of the universe ever taken” and offers a “tantalizing glimpse” at what will be revealed in the coming weeks, months, and years. “When this image was taken, I was thrilled to clearly see all the detailed structure in these faint galaxies,” said Neil Rowlands, program scientist for Webb´s Fine Guidance Sensor at Honeywell Aerospace.
Jane Rigby, Webb´s operations scientist at NASA´s Goddard Space Flight Center, said the “faintest blobs in this image are exactly the types of faint galaxies that Webb will study in its first year of science operations.” NASA administrator Bill Nelson said last week that Webb is able to gaze further into the cosmos than any telescope before it. “It´s going to explore objects in the solar system and atmospheres of exoplanets orbiting other stars, giving us clues as to whether potentially their atmospheres are similar to our own,” he said. “It may answer some questions that we have: Where do we come from? What more is out there? Who are we?
And of course, it´s going to answer some questions that we don´t even know what the questions are.” Webb´s infrared capabilities allow it to see back in time to the Big Bang, which happened 13.8 billion years ago. Because the Universe is expanding, light from the earliest stars shifts from the ultraviolet and visible wavelengths it was emitted in, to longer infrared wavelengths — which Webb is equipped to detect at an unprecedented resolution. At present, the earliest cosmological observations date to within 330 million years of the Big Bang, but with Webb´s capacities, astronomers believe they will easily break the record.
SpaceX's Starship booster is engulfed in an enormous FIREBALL during disastrous test – and it may delay Elon Musk's plans for the $216 million rocket's first orbital flight
SpaceX's Starship booster is engulfed in an enormous FIREBALL during disastrous test – and it may delay Elon Musk's plans for the $216 million rocket's first orbital flight
SpaceX booster rocket burst into flames at the firm's facility in Boca Chica, Texas
SpaceX CEO Elon Musk said on Twitter that the explosive incident was 'not good'
It's likely a setback to Musk's aim of launching his Starship into orbit this summer
SpaceX's Starship booster rocket was engulfed in an enormous fireball during a disastrous ground test on Monday evening.
The booster rocket, developed by Elon Musk's SpaceX for its next-generation Starship spacecraft, burst into flames at the firm's facility in Boca Chica, Texas.
Footage shows a powerful fireball engulfing the bottom of the rocket and sending splinters flying, and dramatically shaking the camera's point of view.
Monday's unfortunate explosion may delay plans for the $216 million rocket's first orbital flight, which was tentatively scheduled for this summer.
SpaceX's futuristic, bullet-shaped stainless steel Starship has been selected by NASA for the recently-delayed Artemis missions to the Moon later this decade.
SpaceX's Starship booster rocket was engulfed in an enormous fireball during a disastrous ground test on Monday
Footage shows a powerful fireball engulfing the bottom of the rocket and sending splinters flying. The ground test took place at SpaceX's facility in Boca Chica, Texas
STARSHIP AND SUPER HEAVY LAUNCHER
SpaceX Starship is made up of two stages, the Super Heavy booster and the Starship vehicle on top.
Super Heavy fires and gives Starship the boost it needs to reach orbit.
Once in space, Starship separates and continues its journey, while Super Heavy returns to land on the ground.
It is designed to be a reusable launch vehicle that could put humans on Mars, according to founder Elon Musk.
SpaceX is planning to carry humans using a two-stage spacecraft composed of Starship (the passenger-carrying section) and the Super Heavy rocket booster.
The firm still has work to do on construction of the $216 million Starship, previously known as 'BFR', although it has been testing out launching Starship prototypes into the air and landing them.
SpaceX was conducting a ground test of the Super Heavy booster when it exploded at around 16:20 CT (22:20 BST) on Monday.
A livestream was being recorded by the website NASA Spaceflight when the explosion took place.
The booster remained standing upright, bolted to a test gantry afterward. There was no immediate indication of injuries, although black smoke spewed from the area of the test pad an hour after the incident.
SpaceX boss Elon Musk said on Twitter: 'Yeah, actually not good. Team is assessing damage.'
Musk also said the issue was to do with the 'spin tests' of the 33 Raptor engines, powered by cryogenic liquid methane and liquid oxygen.
SpaceX flows high-pressure gas through the engines' turbines to power the Super Heavy booster.
The failure came in the midst of a dayslong static fire test campaign in Boca Chica, Texas, of the booster, equipped with an array of 33 Raptor engines for use in an upcoming uncrewed orbital test flight SpaceX hoped to launch later this year
Musk said cryogenic fuel is an 'added challenge'.
'It evaporates to create fuel-air explosion risk in a partially oxygen atmosphere like Earth,' he said on Twitter.
'Going forward, we won't do a spin start test with all 33 engines at once,' Musk also tweeted.
MailOnline contacted SpaceX and the US Federal Aviation Administration (FAA) for an official comment.
An FAA spokesperson replied: 'The FAA is in close contact with SpaceX as the company looks into the fire that occurred as part of its Super Heavy booster rocket development.
'The law limits the FAA’s safety oversight to protecting the public during scheduled launch and reentry operations. Yesterday’s event does not fall under the agency’s jurisdiction.'
The booster remained standing upright, bolted to a test gantry afterward. There was no immediate indication of injuries, although black smoke spewed from the area of the test pad an hour after the incident
A livestream was being recorded by the website NASA Spaceflight when the explosion took place. SpaceX boss Elon Musk posted in reply to NASA Spaceflight on Twitter: 'Yeah, actually not good. Team is assessing damage'
Starship, which will stand 394 feet (120 metres) tall when mated with its super-heavy first-stage booster, is the company's next-generation launch vehicle at the centre of Musk's ambitions to make human space travel more affordable and routine.
An upcoming uncrewed orbital test flight of Starship was anticipated to launch this summer, although a delay now seems likely.
In late 2020 and early 2021, SpaceX lost four prototypes of the Starship itself in a series of high-altitude test launches when the return landing attempts ended in explosions.
The Starship prototype finally made a safe touchdown after a high altitude flight test in May 2021.
Elon Musk (pictured) had hoped Starship's first flight into orbit would come in the first month of 2022
Musk had previously said the first orbital launch of Starship would 'hopefully' happen in January 'or perhaps February' 2022 and could be followed by 12 or more launches throughout the rest of the year.
'There's a lot of risk associated with this first launch,' Musk told the US government's National Academies last November.
'So I would not say that it is likely to be successful, but I think we will make a lot of progress.'
After a dozen or so orbital test flights next year, SpaceX then would start launching valuable satellites and other payloads to orbit on Starships in 2023, he said.
Musk also said his firm has built a 'factory for making a lot of these vehicles'.
'This is not a case of just one or two, we're aiming to make a great many [Starships],' he told National Academies' members. 'Ultimately, in order for life to become multiplanetary, we'll need maybe a thousand ships.'
Musk thinks a natural or manmade disaster will eventually bring about the end of civilization, necessitating the relocation to another planet – Mars 'being the only realistic option', he said.
This could be a pandemic worse than Covid-19, continually decreasing birth rates, nuclear Armageddon or perhaps a direct hit by a killer comet 'that takes out a continent'.
SPACEX'S STARSHIP TO GO TO THE MOON
SpaceX's HLS Starship will include the company's tested Raptor engines, along with pulling inspiration from the Falcon and Dragon vehicles' designs.
It will feature a spacious cabin and two airlocks for astronaut moonwalks.
Work started on designing the lunar vehicle in May 2020 and work will now begin to fully build it thanks to a NASA $2.89 billion contract.
The initial contact covers an uncrewed demonstration mission, and a crewed lunar landing in 2024.
It is also planned future lunar landings will be made using Starship HLS.
It is equipped with a complement of thrusters used on the final descent and takeoff from the surface of the moon.
The final design will have a 100 day loiter capability in lunar orbit allowing for more trips to the lunar surface.
It also is designed to carry extra propellant to allow for an emergency ascent from the moon.
SPACEX STARSHIP BOOSTER PROTOTYPE SUDDENLY GOES UP IN FLAMES
SPACEX STARSHIP BOOSTER PROTOTYPE SUDDENLY GOES UP IN FLAMES
"HOLY MOLY. WELL, THAT WAS UNEXPECTED!"
NASASPACEFLIGHT
Uh Oh
SpaceX's Booster 7 prototype just went up in a ball of flames during a routine test today, which could signal a setback — though, to be fair, there's a lot we still don't know about the incident.
A livestream captured by NASASpaceFlight shows the behemoth structure light up in a massive ball of fire and send small pieces of debris flying, surprising onlookers. It's unclear to what extent the Booster or launch tower were damaged during the explosion
A massive pressure wave also managed to shake NASASpaceflight's camera, indicating the explosion was quite energetic.
"Holy moly," tweetedNASASpaceFlight's Chris Bergin. "Well, that was unexpected!"
SpaceX CEO Elon Musk seemed to say on Twitter that the explosion was planned — although the NASASpaceFlight crew were pretty skeptical, and Musk has been known to shrug off setbacks. One more possible clue: the explosion happened at 4:20 local Texas time — the weed number that Musk loves so much.
Planned Ignition
But others weren't convinced the fireball was meant to happen.
"I'm probably wrong, but surely ignition was not planned with those lifts right by the pad and such," NASASpaceFlight's Michael Baylor tweeted.
"Hydraulic power unit seems to be in trouble," Baylor added in a follow-up. "Smoke rising from it."
"Oooop this might delay Starship's first orbital flight a smidge," Reuters space reporter Joey Roulette tweeted in response.
Going Orbital
The massive rocket is designed to take SpaceX's Starship 20 prototype into orbit during the company's long-awaited orbital test flight sometime this year.
We have yet to hear about a concrete schedule for the launch, but given the substantial fireball, chances are SpaceX may have to delay it.
NASA Officially Unveils First Set of Dazzling James Webb Images
NASA Officially Unveils First Set of Dazzling James Webb Images
The waiting is finally over.
Image by NASA
The wait is officially over. NASA has released the long-awaited first set of images taken by its uber-expensive James Webb Space Telescope — and they're absolutely breathtaking.
During a live broadcast today, the agency showed off the mind-blowing observations, including some of the deepest views of the cosmos we've ever seen, a groundbreaking moment in the field of astronomy that has been decades in the making.
The news comes after NASA announced that it's completed the commissioning phase of the revolutionary space telescope, officially kicking off full scientific operations.
We'll be updating this post as the new images come in.
DEEP FIELD
We already got a glimpse of the Hubble Space Telescope successor's first images during an unveiling of the first-ever image yesterday, the highest-resolution view of the infrared spectrum ever produced. The stunning image shows "just a little speck of the universe," as NASA administrator Bill Nelson explained during the event.
The image is teeming with galaxies. "Everywhere we look, there's galaxies everywhere," Jane Rigby, James Webb scientist, said during the broadcast.
The most distant galaxies show what they looked like more than 13.1 billion years ago, less than a billion years after the Big Bang.
WASP-96B
This giant planet is composed mainly of gas, and is about half the mass of Jupiter. It's located about 1,150 light-years away from Earth, orbiting its star every 3.4 days.
It's the first spectrum of a exoplanet taken by the telescope, which are wavelengths of light we've never had access to before, according to Nicole Colón, Webb deputy project scientist for exoplanets.
"We can tell there's evidence of clouds and hazes, but the water features aren't as large as we predicted," Colón explained.
"We don't expect that planet to be habitable (it's too hot, and it's a gas giant, so no solid surface)," cosmologist Katie Mack tweeted. "But there's hope we might observe atmospheres of more Earth-like planets in the future."
SOUTHERN RING NEBULA
This gorgeous infrared image shows a star dying in stunning detail.
"Well this one's a banger," The Atlantic's Marina Koren tweeted.
This planetary nebula is an expanding cloud of gas, shrouding the dying remains of a star. It's roughly 2,000 light-years away from Earth and nearly half a light-year in diameter.
The nebula shows up due to its molecular nitrogen lighting up the gas surrounding the stellar remains. The blue haze is due to hot ionized gas, heated by the leftover core of the star.
STEPHAN'S QUINTET
This set of five galaxies is an astonishing 290 million light-years away.
There are millions to hundreds of billions of stars inside each galaxy. They are locked in a close, cosmic dance due to their gravitational force.
The galaxies are also in the process of merging, offering us important clues into the evolution of huge structures in the universe.
The image even shows black holes sucking up matter in the center.
CARINA NEBULA
This stellar nursery is some 7,600 light-years away in the constellation Carina. It's one of the brightest and largest in the sky.
It's also home to massive stars, several times the mass of the Sun.
The gorgeous infrared image shows hundreds of new stars we've never seen before, including jets of bubbling gases being expelled as new stars are born. Every dot of light is an individual star, which may have individual planets orbiting them as well.
MORE TO COME
It's certainly not the last time we'll be hearing from the James Webb Space Telescope. These images only represent the very first batch of scientific observations, and we'll likely see countless more stunning views.
"We're going to be doing discoveries like this every week," Rigby promised.
What caused the sky to turn apocalyptic green over South Dakota?
What caused the sky to turn apocalyptic green over South Dakota?
The skies above South Dakota, US turned green on Tuesday (5 July) as a particularly strong storm rolled in.
Eerie images appeared on social media showing the peculiar color of the sky over Sioux Falls, South Dakota just before a thunderstorm swept through the area.
The National Weather Service confirmed that a ‘derecho storm’ barreled through much of South Dakota, Minnesota and Iowa, leaving nearly 30,000 people without power for hours.
Storms qualify as derechos when they have sustained winds of at least 93 km/h and leave a path of damage at least 400 km long, according to the National Weather Service. This particular storm reached a wind speed of 159 km/h.
While residents in South Dakota have grown used to derechos having recently experienced two such storms, the green sky was a highly unusual sight.
What caused the sky to turn green?
It’s not fully understood why green skies occur, but most scientists point to the liquid water content in the air as a root cause. The celestial phenomenon occurs when clouds carry a lot of water and allow primarily blue light to pass through the storm cloud. The blue light mixes with the sun's red light, and the sky turns green.
SS live feed: Fast moving UFO slows down, stops, changes direction and moves on
SS live feed: Fast moving UFO slows down, stops, changes direction and moves on
On April 20, 2016 the ISS live cam recorded an unknown object that certainly wasn't a meteor or space junk.
The object comes into view of the ISS camera while flying at high speed, then it slows down its speed until it totally stops. After a while the object moves on and changes it s direction twice before it disappears into space.
Since the object makes several maneuvers, it also cannot be a satellite. this is clearly a secret man-made or extraterrestrial craft which is under intelligent control.
Asking NASA or the ISS crew what this object could have been is a waste of time, as they will never admit the origin of this craft.
Two silver UFO spheres over Horton Kirby, UK 9-Jul-2022
Two silver UFO spheres over Horton Kirby, UK 9-Jul-2022
This really strange UFO sighting was filmed in the daytime sky above Horton Kirby, a village in the Sevenoaks District of Kent, England. This happened on 9th July 2022.
Witness report:
Sitting in my garden I noticed off to my left 2 objects flying parallel to each other, at first I took it to be 2 herons then noticed them to be metallic spheres, thinking they maybe baloons I checked the wind direction which was at a constant moderate breeze in the direction of N to SW these objects however were travelling in a direction of W to E approximately which meant they were cutting across the wind at approx a 45 degrees angle. They elevated to just under the clouds and then disappeared. I was unable to see them on the phone screen (Samsung S21+) so just pointed and shot in the general direction in an attempt to capture some footage so not the best I’m afraid but you can clearly see in the attached video the objects.
Hawaiian Drama Over ‘Yellow Brick Road’ Geology and Atlantis!
Hawaiian Drama Over ‘Yellow Brick Road’ Geology and Atlantis!
Deep sea scientistshave released a video showing a ‘bizarre’ geological formation that they have already named the Yellow Brick Road. However, the section of seabed making the headlines is nowhere nearly as strange as the ‘Devil´s piles’ the researchers skipped over.
An oceanic expedition examining a deep sea ridge to the north of the Hawaiian Islands recently discovered a dried-out lake bed that looks like a human built road. The visual similarity caused the team of scientists involved in the discovery to jokingly mention the “yellow brick road” and “the road to Atlantis.”
According to a ScienceAlert article the team of researchers from the Ocean Exploration Trust are “pushing the frontiers of this wilderness… more than 3,000 meters below the waves,” and the imagery they are sending back certainly is stunning. As for the geological wonder, it is located atop a deep sea ridge within the Papahānaumokuākea Marine National Monument (PMNM), one of the largest marine conservation areas in the world.
Following The Yellow Brick Road
The so-called Yellow Brick Road was discovered by the Nautilus deep sea exploration vessel. You can read all about the 2022 E/V Nautilus expedition here. The team were surveying the Liliʻuokalani sea area to the north of Hawaii. Liliʻuokalani was the last sovereign monarch of the Hawaiian Kingdom and ruled until the kingdom was overthrown at the beginning of 1893 AD.
The research team’s YouTube video revealed a range of fascinating sea creatures and they searched for archaeological evidence. This deep sea exploration effort is the first of its kind in the area, and showing some crazy stuff, so they use the words ‘bizarre’, ‘insane’ and ‘awesome’ a lot. When they come upon the geological feature over which all the fuss is being made, one of the researchers enthuses “It's the road to Atlantis,” while another screams “this is crazy.”
If You Thought That Was Crazy, Check This Out
About a thousand meters deep on the summit of the Nootka seamount, one of the team says the ground looks like “baked crust that could be peeled off.” Then one of the scientists calls the rock formation bizarre. While the geological feature he was referring to, that has made the headlines, is not actually bizarre, in geological terms, the pillar like formations featured at 17.55 mins, which one of the team refers to as “Devil’s piles” are indeed geologically bizarre.
The Devil’s Piles the team came across in their deep sea explorations.
Devils Postpile National Monument protects and preserves the Devils Postpile formation. Towering up to 60 feet (18 meters) high, this geological example of columnar basalt displaying hexagonal geometry can also be seen on the other side of the Atlantic.
On a shoreline in County Antrim on the north coast of Northern Ireland , about three miles (4.8 km) northeast of the town of Bushmills, the Giant’s Causeway features 40,000 interlocking basalt columns in a similar stepping stone structure to those featured in the scientist´s Liliʻuokalani video. The Irish formations range in height from 12 meters (39 feet) and can be as wide as 28 meters (92 feet).
A Team Of ‘Ologists’, Without The ‘Geo’
Returning to the Yellow Brick Road, a YouTube commenter killed the mystery in one simple post which was featured in the ScienceAlert article. They said the so-called unique 90-degree fractures are likely related to “heating and cooling stress from multiple eruptions at this baked margin.” The only reason the team were so excited is because they don't see such formations every day, whereas, if it was a geological team they might have passed over it without so much as a comment. But for sure, a geology team would have spent a week on the Devil's piles.
Modern mythology is paved with several underwater geological features caused by historic tectonic movements and volcanic eruptions. Perhaps the most infamous is the Bimini Road rock formation near North Bimini island in the Bahamas. Measuring about a kilometer long and comprising linear rectangular limestone blocks, many writers claim this was also a road to Atlantis. And it was from this name given to the Bimini Road that the Nautilus researcher got his reference for the tablet-like geological feature shown in the video.
The team say they have “a whole lot more to learn about Earth's hidden geology .” And what is fantastic about all this research is that it is available for us all to follow in real time, because every day live footage is streamed from E/V Nautilus deep sea RVs.
Top image: The deep sea geological formation dubbed the “Yellow Brick Road” by the researchers that found it north of the Hawaiian Islands. Source: YouTube screenshot / EVNatilus
It has been claimed that a nurse was left traumatized after she was forced by the U.S. military to assist on an alien autopsy following the Roswell unidentified flying object (UFO) crash.
Daily Star reported that a person working at the Roswell funeral home, which was asked to make child-size coffins for alien bodies by the military, claimed that he knew the nurse. After the Roswell UFO crash in 1947, the employee, Glenn Dennis, was working at the undertakers in Roswell, New Mexico, according to IT Trending. He took the nurse's identity to the grave with him, but he revealed a few details about the encounter.
James Clarkson, a former detective and military police officer, spent time interviewing Dennis before his death. He believes that Dennis was a reliable witness. He shared that you just know, when somebody is telling you the truth, and he had "some intuition of when people are giving their heart when they're telling you what they really believe." He believed that Dennis "wasn't lying."
Dennis shared with Clarkson about the nurse who was left traumatized by the autopsy of an alien. Clarkson said that in small Western towns back then, they "didn't have paramedics or ambulances." He said that if they needed to transport a "sicker injured person, sadly, the best vehicle to do that in was a hearse," and so many times in small towns, "the funeral home, the funeral directors would do double duty."
He shared that Dennis was taking an injured airman back to the base and he pulled in there and "he saw all these vehicles and people that he'd never seen before." Clarkson added that then a nurse Dennis knew came out of a back room and said, "Glen, what are you doing here?" She was so horrified that she "resigned her commission in the military," and there'd been a "lot of speculation about where she went." Clarkson said that Dennis promised her that he would never reveal her name.
Clarkson said that when they started investigating Roswell, which wasn't until the eighties, and heard about Dennis "working in the funeral home and being called, people were all over him." He kept saying that he didn't want to share anything about the nurse. When he was pushed too far, Clarkson said that Dennis made a name up, just to stop the questions, but later regretted it.
75 years ago, Roswell 'flying saucer' report sparked UFO obsession
75 years ago, Roswell 'flying saucer' report sparked UFO obsession
Dave Kindy, The Washington Post
Fort Worth Army Air Field 8th July 1947: Jesse Marcel, head intelligence officer, who initially investigated and recovered some of the debris from the Roswell UFO site poses with debris. In mid-1947, a United States Air Force balloon crashed at a ranch near Roswell, New Mexico. Following wide initial interest in the crashed 'flying disc', the US military stated that it was merely a conventional weather balloon. (Photo by: Universal History Archive/ Universal Images Group via Getty Images)
Universal History Archive/Universal Images Group via Getty
The world was worrying about war when rancher W.W. Brazel walked into the sheriff's office in Corona, N.M., on a hot, dusty day 75 years ago to report a "flying disk" he might have found on his property, about 100 miles northwest of Roswell Army Air Field.
The next day - July 8, 1947 - the public information officer at the base issued a news release stating the U.S. Army Air Forces had recovered a "flying saucer" at the ranch. While military brass quickly retracted the statement, it was too late: The legend of Roswell as the "UFO Capital of the World" was already soaring - much like the countless bright objects many Americans claimed to have seen in the sky that summer.
The event that we know today as the "Roswell Incident" gave birth to the modern movement of UFO sightings, along with the genre of alien science fiction.
"For centuries, people have seen things they can't explain," said Roger Launius, a historian and the retired curator of the Smithsonian's National Air and Space Museum. "In earlier generations, they referred to them as angels, demons, deities or whatever. That changes with the scientific revolution, where people began to wonder if the points of light they see are alien in nature."
The fertile ground for Roswell was sown under the darkening mushroom cloud of the nuclear age. World War II had ended less than two years earlier, and the United States and Soviet Union seemed to be on the precipice of another global conflict. The term "Cold War" was coined by George Orwell in a 1945 essay and entered the modern consciousness when Bernard Baruch, an adviser to President Harry S. Truman, uttered it in a speech in the spring of 1947.
Amid this heightened apprehension came the first news of "flying saucers" - and the term's first mention in print, according to the Oxford English Dictionary - on June 24. Media across the country reported that a civilian pilot named Ken Arnold said he'd spotted bright objects streaking across the sky at supersonic speeds near Mount Rainier in Washington.
Some officials suggested the fast-moving lights might have been rockets or jets being tested by the military. Nonetheless, public hysteria erupted over the next few weeks, with more than 800 similar sightings being reported across the country - many of them deemed "copycat" events by law enforcement and military officials.
"When Ken Arnold sees this stuff, it's told in an overblown tabloid way," Launius said. "It gets hyped-up in the press and builds from there. If the present doesn't tell you that Americans love conspiracies, I don't know what does. It wasn't any different in 1947."
While all this was happening, an unsuspecting Brazel was tending the sheep and cattle on his New Mexico ranch. With no radio or newspaper, he was isolated from the outside world. The rancher gave little thought to the unusual debris he found scattered around his pastures.
On July 5, Brazel headed into Corona on a Saturday night and learned what everyone else had been talking about. He began to wonder whether there was a connection. On Monday, he gathered up the strange material and traveled back into town to inform local officials of his discovery. The sheriff visited Brazel's ranch, then contacted the military.
The debris was transported to Fort Worth Army Air Field in Texas, where military experts proclaimed it was from a crashed weather balloon. However, before that pronouncement was relayed back to Roswell, the New Mexico base sent out the news release about finding a "flying saucer." Lt. Walter Haut, Roswell's public information officer, later claimed that base commander Col. William H. Blanchard had ordered him to use that description.
For a few days, the world's attention was focused on Roswell, N.M. But most people seemed satisfied with the military's explanation, and the story quickly faded.
It would not blow up again until 1978, when the National Enquirer ran an article about the incident. All of a sudden, new versions of the event emerged - some from the original participants - with reports of an actual spacecraft, alien bodies and a government coverup adding new layers to the legend.
"The story seems to get better with each retelling," Launius said. "Initially, there was no discussion whatsoever of alien bodies. That somehow gets wrapped in it as part of the original incident, even though there is nothing about it in the sources of the time."
The story evolved with a seemingly endless array of articles, books, movies and documentaries about what "really happened" in the New Mexico desert. In 1993, television audiences were introduced to the long-running series "The X-Files," whose fictional stories of FBI agents Fox Mulder and Dana Sculley tracking down alien abductions and an international conspiracy only added fuel to the fire.
Many involved with the incident altered their descriptions of events over time, including the government. In 1947, the CIA and military were concerned that these "flying saucers" were actually new technology being used by the Soviets. When the Army Air Forces retracted its first statement, it was less than forthcoming about the debris' origins - likely because it was hiding a secret.
"The weather balloon was a cover story," Launius said. "The best evidence suggests that this was a Project Mogul listening device that they recovered pieces of."
Project Mogul was a military program designed to intercept Russian radio messages via high-altitude balloons, which would eventually deflate and fall to the Earth. Several crash sites have been identified around the country. In 1994, a U.S. Air Force report identified the top-secret project as the likely source of the debris found in New Mexico.
Launius said the UFO sightings of the summer of 1947 were the result of a world consumed by fear of an apocalypse.
"Just in the United States between 1947 and 1960, there were a total of 6,523 UFO reports," he said. "There seems to be a direct tie between public perception of the reality of space travel and these UFO sightings. I am convinced that the rapid rise in the number of UFOs reported in the early Cold War era was the result of heightened tensions as everyone watched the skies for warning of a nuclear attack."
But even if the Roswell Incident could be explained by a military program, subsequent events in the skies remain a mystery. On July 19, 1952, almost exactly five years after Brazel reported the strange debris on his ranch, a series of UFO sightings occurred over Washington, D.C. Airline pilots reported seeing flashes of light streaking across the sky, and radar operators were perplexed by fast-moving blips on their screens. The Air Force scrambled jets to intercept the objects, which disappeared and never returned. The event 70 years ago has never been explained.
As the poster in Mulder's office in "The X-Files" reads, "I want to believe."
See what people in Florida have seen in the sky and reported to the National UFO Reporting Center. (Shutterstock)
FLORIDA — Here's something to celebrate as World UFO Day approaches on July 2: The Defense Department has finally acknowledged UFOs — or UAP, unidentified aerial phenomena — are real and may explain what you've seen in the skies over Florida.
In May, during the first public hearing on UFOs in half a century, a top Navy intelligence official told lawmakers the military has added more than 250 reports of aircraft flying at mysterious speeds and trajectories to its database in the past year, bringing the total to about 400.
What lawmakers didn't hear is evidence of extraterrestrial life.
What are folks reporting in the skies above Florida? The crowd-sourced list from the National UFO Reporting Center includes some strange things, indeed. For example:
One person in Fort Meyers said they saw a bright object moving across the sky and leaving smoke circles.
Another person on Anna Maria Island reported seeing a disc that moved across the sky for about 10 seconds and then quickly faded.
Someone in Jacksonville said they saw three objects hovering in the sky for about two hours. They told the Reporting Center that they called 911 1hen they saw an airplane flying in the same direction, but the dispatcher said there was not an aircraft in the area.
World UFO Day on July 2 commemorates the Roswell crash, which more or less made it safe for Americans to talk about strange occurrences in the sky. The crash occurred at the dawn of the Cold War, a time of escalating tension over the arms race when school children were taught duck-and-cover drills to protect themselves in a nuclear attack, fueling wild speculation about the object's origins.
The Roswell Army Air Field announced in a July 8, 1947, news release that it had recovered the wreckage of a "flying disc" from W.W. "Mac" Brazel's ranch about 75 miles north of Roswell.
The release was straightforward, noting:
"The many rumors regarding the flying disc became a reality yesterday when the intelligence office of the 509th Bomb Group of the Eighth Air Force, Roswell Army Air Field, was fortunate enough to gain possession of a disc through the cooperation of one of the local ranchers and the sheriff's office of Chaves County."
Earlier that summer, on June 24, 1947, Kenneth Arnold, a businessman piloting a small plane, filed the first well-known report of a UFO over Mount Rainier in Washington, according to History. Arnold claimed he saw nine high-speed, crescent-shaped objects zooming along at several thousand miles per hour "like saucers skipping on water."
The Roswell Army Air Field mentioned nothing in its press release about alien life, but people were already growing uneasy about what might be circling overhead. Brazel was among them.
He thought the object he found on his ranch was similar to what Arnold had seen, or to the objects described stories about flying saucers and discs, so he gathered some of the material from the wreckage, including rubber strips, tinfoil and thick paper, and deposited them with Sheriff George Wilcox, who in turn turned it over to the commanding officer of the Roswell Army Air Field.
Although the objects Arnold claimed to see weren't saucer-shaped at all, his analogy led to the popularization of the term "flying saucers." And since then, Americans have been more or less obsessed with the idea that alien life is among us. That brings us to the May hearings.
The Defense Department was loathe for many years to even acknowledge the existence of UFOs — or, as they're referred to in military and spy agency circles, UAP. But the Pentagon had to walk back years of public denial after a shadowy five-year program to investigate UFOs was exposed in 2017 by The New York Times and Politico.
The intelligence gathered over the five years of the program, which was initiated in 2007, included former Naval Cmdr. David Fravor's account of an other-wordly encounter with an oblong, Tic Tac-shaped aircraft flying erratically through his airspace at an incredible speed, defying accepted principles of aerodynamics.
"I can tell you, I think it was not from this world," Fravor told ABC News in 2017. "I'm not crazy, haven't been drinking. It was — after 18 years of flying, I've seen pretty much about everything that I can see in that realm, and this was nothing close."
Sen. Marco Rubio of Florida, now a ranking member of the Senate Intelligence Committee, called on the Pentagon in late 2020 to investigate the UFO sightings.
The military said in its 2021 report to Congress on UFOs that investigators found no evidence supporting alien life, a finding Scott W. Bray, the deputy director of Naval intelligence, repeated in the hearings in May, telling lawmakers the investigation hadn't turned up anything "extraterrestrial in origin," and that none of the documented objects had attempted to make contact with U.S. aviators.
All of the unexplained sightings appeared to be unmanned, Bray said.
Still, the sightings are of great concern both to the military and to members of Congress from both parties, who worry about threats to national security. Some of the sightings of aircraft flying without a discernible means of propulsion have been reported near military bases, raising concerns they are the stealth spy aircraft of U.S. adversaries.
The U.S. government is believed to be withholding technical information about the sightings of the mysterious aircraft near military bases and coastlines, raising concerns about Chinese or Russian spy technology.
"We are also mindful of our obligation to protect sensitive sources and methods," Undersecretary of Defense for Intelligence and Security Ronald Moultrie said in his opening remarks. "Our goal is to strike that delicate balance — one that will enable us to maintain the public's trust while preserving those capabilities that are vital to the support of our service personnel."
Indiana Congressman Andre Carson, a Democrat who chairs the subcommittee of the House Intelligence Committee that held the hearing, has previously said that pilots too often are reluctant to come forward for fear they'll be ridiculed.
"We want to know what's out there as much as you want to know what's out there," Moultrie told lawmakers, adding that he was a fan of science fiction himself. "We get the questions, not just from you. We get it from family, and we get them night and day."
The move to destigmatize UFO reports appears to be contributing to an increase in reports, and detection capabilities are improving, Bray said.
For example, he said, Navy and Air Force pilots and crews "now have step-by-step procedures for reporting UAPs," using onboard technology.
Also, sensors have been improved, and more drones and other non-military aerial systems are in the skies, which could account for some of the increased sightings.
Another possible culprit, Bray said: Mylar balloons.
Republican Wisconsin Rep. Mike Gallagher introduced an amendment to the Fiscal Year 2023 National Defense Authorization Act (NDAA) to protect UFO whistleblowers from retaliation.
The amendment would create a “secure system for receiving reports of any event” or “any government or government contractor activity related to unidentified aerial phenomena (UAPs). The whistleblower system would be staffed by “designated and widely known, easily accessible, andappropriately cleared Department of Defense and intelligence community employees or contractors.”
The language in the amendment has the potential to increase the disclosure of information on UFOs and unidentified aerial phenomena (UAPs) as it would protect those who come forward with information, according to The Drive. Individuals who speak publicly about UFOs have reportedly said that they have proof of alien life, but do not reveal much of the details for fear of imprisonment, according to Engadget.
China Claims It Might Have Detected Signals From Aliens, Then Deletes The Report https://t.co/IGqjhP4aCP
The whistleblower system would be screened “to prevent unauthorized public reporting or compromise of properly classified military and intelligence systems, programs, and related activity, including all categories and levels of special access and compartmented access programs, current, historical, and future.”
Should anyone who discloses information on UFOs and UAPs be retaliated against, they would be allowed to bring civil action “for all appropriate remedies,” the amendment continued.
“Despite recent progress, we still know far too little about UAPs, along with the threat they may pose to our national security and the safety of our pilots. No one should be afraid of potential repercussions from sharing information that could help us better understand this phenomena, which is why we need to establish a secure and protected process within the government for individuals to share information and expand our understanding,” Gallagher told the Daily Caller of his amendment.
Gallagher is an outspoken advocate for UFO/UAP disclosure. During a livestreamed House Permanent Select Committee Intelligence Hearing on the topic, he pushed Pentagon officials to disclose more information on one reported incident from a Montana nuclear facility, which was shared to his YouTube channel.
Blue-Skinned E.T. From Andromeda Told US Army Personnel Origin Of Humanity
Blue-Skinned E.T. From Andromeda Told US Army Personnel Origin Of Humanity
There are many assumptions about the number of extraterrestrial species in the universe. Many UFOlogists, abductees, and even people in authorities claim to have seen the so-called intelligent beings from outer space. Alex Collier is the only contactee who provided in-depth information about the beings from Andromeda. In his interviews, he discussed the influence of various alien species on the human race.
Many well-known UFO enthusiasts considered Collier to be credible, at least in the sense that he tries to convey as fully as possible the information received from his contacts with the Andromedans. He first began to experience extraterrestrial contact during his childhood up to his mid-teens. After the experiences stopped over a period of several years, which included military service as a helicopter pilot in the U.S. Army, the contact resumed in 1985.
He met with two Andromedans who became his mentors and took him on board their space vehicles including a large extraterrestrial mother ship where he was exposed to the teachings of the Andromedans over a three-month period. The Andromedans gave him information about cosmic spirituality, life in the universe, and Earth’s galactic history.
Collier claimed that humans are composite of 22 different ETs races that arrived on Earth at different times
The Andromedans are “one of the thousands of extraterrestrial races in existence.” They are human and some have bluish skin, measuring more than 2 meters tall. According to Collier, the author of the book “Defending Sacred Ground: The Andromedan Compendium,” all human life forms originated in the Lyra Constellation. However, a war caused their stars to explode, making humanity spread to different places in the galaxy to survive.
Collier explains that the different skin tones are due to different DNAs and exposure to different stars. The Andromeda Beings are one of the oldest civilizations living in the Andromeda constellation.
This civilization, no matter where in the constellation it lives, has a single government and is spiritually 4,700 more advanced than us, as well as 5,000 years technologically. However, they maintain a balance of the spiritual and technological. In fact, they use technology to be able to evolve spiritually.
This is because there are different dimensional levels. We are currently in the Third dimension. We still haven’t reached the Fourth, much less the Fifth. What differentiates the Third from the Fourth dimension, is the conscience.
In the fourth dimension, there is a collective consciousness, because everyone is telepathic and can read the mind of the rest. This leads to each person being authentic, transparent, and without ulterior motives. Upon entering this dimension, the being becomes clairvoyant since, in this state of consciousness, energy systems and fields can be seen.
However, there are still dualities and the judgment systems are modified since the judiciary will be able to take decisions according to the energy fields. The beings of Andromeda have not lived in a society as manipulated as ours. They are telepathic and clairvoyant because they have studied all the sciences.
All souls know who they are, they all know about their past lives, and every time they incarnate, they are aware and know where they are going. In addition, they can see their evolution in the afterlife.
According to various interviews by Collier, he stated that Earth is under the control of “regressive” extra-terrestrial beings. Those aliens came to Earth from the star system known as Alpha Draconis. He said that humans are separated by two different philosophical belief systems. One of them spreads love & free will, while the other one shows control and resource consumption. He said humans are behind the Andromedans because of the manipulations in our DNA. The intense manipulation of Earth dated back 5,700 years. However, this has an origin 14,000 years ago, when the aliens from Orion began to manipulate our DNA structure.
In his last lecture before he retired from the UFO lecture circuit in 2002, Collier said that the ancient alien race known as the “Founders” are responsible for building planets’ environments and making them suitable for life. The Andromedans and the Pleiadians believed that this ancient alien race is called the “Paa Tal.”
He even said that those aliens are capable of removing moons to alter the planet’s position from its sun to control the amount of radiation. The Andromedans could reportedly create a solar system.
Collier noted that the Andromedans are about 4,300 to 4,500 years ahead of us in technology. They do not count years in 365 days as we do on Earth. According to different extraterrestrials, one year is a time when every cell in their body duplicates itself, and it takes around 34 years.
According to Collier, humans consist of 22 extraterrestrial races. He claimed that there are about 135 billion people living on the planets in the eight closest galaxies to us. He even said that when he visited one of those habitable planets, those people got scared of seeing an earthling because of our bad reputation. In the whole universe, only humans could make their own people slaves and kill them for their own benefits.
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- Gemiddelde waardering: 0/5 - (0 Stemmen) Categorie:ALIEN LIFE, UFO- CRASHES, ABDUCTIONS, MEN IN BLACK, ed ( FR. , NL; E )
BOTSENDE STERRENSTELSELS? JA, MAAR JE MOET WEL GOED KIJKEN!
BOTSENDE STERRENSTELSELS? JA, MAAR JE MOET WEL GOED KIJKEN!
Tim Kraaijvanger
Ergens op deze Hubble-foto botsen twee sterrenstelsels op elkaar. En nee, het zijn niet de twee grote spiraalstelsels die in elkaar lijken te schuiven.
Het grote sterrenstelsel op deze ruimtefoto van de week is NGC 105. Dit spiraalstelsel is 215 miljoen lichtjaar van de aarde verwijderd en ligt in het sterrenbeeld Vissen. Het object werd in 1884 door de Franse astronoom Édouard Stephan ontdekt. NGC 105 is zelfs met een goede verrekijker nog niet te zien. Je hebt een flinke telescoop nodig, wat ook verklaart waarom het sterrenstelsel pas relatief laat is ontdekt.
Links naast NGC 105 zien we een ander sterrenstelsel. Het lijkt net alsof dit sterrenstelsel – PGC 212515 (of LEDA 212515) – botst met NGC 105. In werkelijkheid is er niets aan de hand. De afstand tussen PGC 212515 en de aarde is 350 miljoen lichtjaar. Dit betekent dat er ruim honderd miljoen lichtjaar ‘ruimte’ is tussen de zogenaamde botsende sterrenstelsels en dat is meer dan genoeg. Om het in perspectief te plaatsen: het Andromedastelsel is slechts 2,5 miljoen lichtjaar van onze Melkweg verwijderd.
Toch zijn er wel botsende sterrenstelsels te zien op deze prachtige foto. Dan moeten we wel eerst goed inzoomen. Ver in de achtergrond treffen we diverse onregelmatige sterrenstelsels in verschillende soorten en maten aan. En ja hoor: er zijn zelfs twee botsende sterrenstelsels zichtbaar. Kijk maar eens naar de uitsnede hieronder. De botsende sterrenstelsels zie je net onder het midden van de foto.
Maar er is meer te zien op de foto. Zie je die heldere ster rechtsboven NGC 105? Die ster bevindt zich in onze Melkweg. Dit object staat dus honderdduizenden keren dichter bij de aarde dan NGC 105. Daarnaast zie je ook talloze rode puntjes. Dit zijn allemaal sterrenstelsels op miljarden lichtjaren afstand van de aarde. Fascinerend!
Veranderlijke ster steelt de show De reden dat NGC 105 is gefotografeerd door de Hubble-ruimtetelescoop is omdat dit sterrenstelsel een zogenoemde Cepheïde huisvest. Dit is een veranderlijke ster die regelmatig opzwelt en krimpt. Als de ster opzwelt, neemt de temperatuur toe en wordt de Cepheïde helderder. Na deze piek krimpt de gasbol weer en koelt de ster zo’n duizend graden af. Cepheïden zijn overigens hele grote sterren, namelijk zogenoemde superreuzen. Een gemiddelde Cepheïde heeft een doorsnede van vijftig miljoen kilometer. In vergelijking: de zon heeft een doorsnede van ruim één miljoen kilometer.
Verschillende supernova’s In NGC 105 bevinden zich ook nog eens drie Type Ia supernova’s, namelijk SN 1997w, SN 2006tg en SN 2007A. Dit type supernova ontstaat in nauwe dubbelstersystemen, waarin de ene ster een witte dwerg is, en de andere een rode reus (of een tweede witte dwerg). Type Ia supernova’s spelen een cruciale rol in ons begrip over het universum. De supernova van type Ia is namelijk de helderste soort supernova: hij straalt meer dan een miljard keer meer energie uit dan onze zon. Hierdoor kunnen ze over grote afstanden worden gezien. Bovendien stoten ze bij hun gewelddadige ontploffingen veel elementen uit waar vervolgens nieuwe sterren en sterrenstelsels uit voortkomen.
Astronomen kunnen Type Ia supernova’s en Cepheïden gebruiken om de afstand tot verre sterrenstelsels nauwkeuriger te bepalen. Wat dat betreft is NGC 105 daarmee het perfecte ‘proefkonijn’ voor astronomen, omdat beide objecten hier aanwezig zijn.
De afgelopen decennia hebben ruimtetelescopen en satellieten prachtige foto’s gemaakt van nevels, sterrenstelsels, stellaire kraamkamers en planeten. Ieder weekend halen we één of meerdere indrukwekkende ruimtefoto uit het archief. Genieten van alle foto’s? Bekijk zeop deze pagina.
Bronmateriaal:
Afbeelding bovenaan dit artikel: NASA
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