Octopus-like creatures inhabit Jupiter’s moon, claims space scientist
A leading British space scientist thinks there is life under the ice sheets of Europa.
03 May, 2020
Credit: NASA/JPL-Caltech/SETI Institute
- A British scientist named Professor Monica Grady recently came out in support of extraterrestrial life on Europa.
- Europa, the sixth largest moon in the solar system, may have favorable conditions for life under its miles of ice.
- The moon is one of Jupiter's 79.
<p>Alien hunting is a hopeful activity and one reason behind our space programs that the public generally supports. Looking for other life is a strong incentive to be venturing out into space, despite having found none so far. A top British space scientist,<strong> Professor Monica Grady,</strong> gave all cosmic explorers a big dose of such hope in a recent speech. She is certain there's some form of life on Jupiter's moon, <strong>Europa</strong>.</p><p>This life would not look human, but more like an "octopus," and is likely residing in the cold waters under the moon's sheets of ice. </p><p>Grady, a Professor of Planetary and Space Science and Chancellor at Liverpool Hope University, thinks there's a great likelihood of undiscovered life somewhere in our galaxy.</p><p>She also supposes that the deeper caves and cavernous spaces of Mars could be harboring some subterranean creatures, likely bacteria, there to escape the solar radiation. They could be getting water from the ice buried deep down. </p><p style="margin-left: 20px;">"When it comes to the prospects of life beyond Earth, it's <strong>almost a racing certainty </strong>that there's life beneath the ice on Europa," <a href="https://phys.org/news/2020-02-certainty-life-europa-mars-uk.html" target="_blank">she said</a> in a February address.</p>
<p><span style="background-color: initial;">She thinks these life forms on Europa, </span><span style="background-color: initial;">390 million miles from Earth, could be higher in sophistication than the Martian bacteria, possibly having "the intelligence of an octopus."</span><br></p><p>Where would the creatures live on this moon of Jupiter? Somewhere below the very thick layer of ice, which goes 15 miles deep in some places. It's possible there is liquid water beneath all that ice, keeping whatever lives inside protected against radiation and the impact of asteroids and similar smashing bodies.</p><p><span></span><span style="background-color: initial;">The likelihood of life on Europa is bolstered by </span><span style="background-color: initial;">the possible <a href="https://ui.adsabs.harvard.edu/abs/2011AGUFM.P23D1743G/abstract" target="_blank">hydrothermal vents</a> on its ocean floor. Such vents are cradles of life on Earth.</span></p><p>Grady thinks that our solar system doesn't have to be particularly special and that statistically speaking, as we explore other stars and galaxies, we should be able to find conditions for life. "I think it's highly likely there will be life elsewhere—and I think it's highly likely they'll be made of the same elements," <a href="https://phys.org/news/2020-02-certainty-life-europa-mars-uk.html" target="_blank">stated</a> the professor.</p>
Neil deGrasse Tyson wants to go ice fishing on Europa
<div class="rm-shortcode" data-media_id="GLGsRX7e" data-player_id="FvQKszTI" data-rm-shortcode-id="f4790eb8f0515e036b24c4195299df28"> <div id="botr_GLGsRX7e_FvQKszTI_div" class="jwplayer-media" data-jwplayer-video-src="https://content.jwplatform.com/players/GLGsRX7e-FvQKszTI.js"> <img src="https://cdn.jwplayer.com/thumbs/GLGsRX7e-1920.jpg" class="jwplayer-media-preview" /> </div> <script src="https://content.jwplatform.com/players/GLGsRX7e-FvQKszTI.js"></script> </div><p>Grady did not want to guess whether we would contact extraterrestrials any time soon, citing the fact that distances between us and likely aliens might be gigantic. </p><p>On the other hand, she added, if you look at a grain of sand, you "can see that most of it is made up of silicates, but it's also got little patches of carbon in it—and that carbon is extra-terrestrial, because it also contains nitrogen and hydrogen, which is not a terrestrial signature."</p><p>This tiny sample, says Grady, shows it was hit by meteorites, asteroids, and interstellar dust, pointing out "It's giving us an idea of how complex the record of extra-terrestrial material really is."</p>
<p>As for Europa, it has certainly figured in conversations about alien life previously. As <a href="https://europa.nasa.gov/mission/why-europa/" target="_blank">NASA explains</a>, scientists call Europa an "ocean world" due to decades of observations that predict an ocean under its sheets of ice. </p><p><span style="background-color: initial;">In 2019, water vapor was confirmed there by NASA for the first time. While it might just have the right conditions for life, </span><span style="background-color: initial;">does this moon have little octopus E.T.s swimming about? Future studies will tell. </span></p>
Water Vapor Above Europa’s Surface Deteced for First Time
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Neil deGrasse Tyson wants to go ice fishing on Europa
Everyone loves Europa, says Neil deGrasse Tyson. Why? It's a strong bet for finding life in our solar system, and it's even more amazing because it breaks all the rules.
12 May, 2017
Where there is water, there is life—and Europa’s got water alright: scientists believe it has twice the volume of Earth’s oceans swirling beneath its kilometers-thick ice crust. A moon in Jupiter’s massive orbit, Europa has captivated astrophysicists, including Neil deGrasse Tyson, because it has completely blown open the borders in the search for life in our universe. Europa is well outside of the life-supporting "Goldilocks Zone". Tyson explains how liquid water can exist in such a frozen part of our solar system, and how engineers might approach getting through all that ice to potentially come face to face/membrane with life, whether simple or complex. It won’t be too long before NASA’s ‘Europa Clipper’ mission makes its move to investigate the habitability of the icy moon: it will head for Europa in the 2020s. Tyson's new book is Astrophysics for People in a Hurry.
<p><a href="http://www.indiebound.org/book/9780393609394"><img height="150" src="%5Cr%5Cnhttps://s3.amazonaws.com/edge-misc-assets/Book+Covers/Neil+deGrasse+Tyson.jpg" width="225"></a></p>
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NASA Discovers Why Saturn's Moon Enceladus May Be the Best Place to Look for Alien Life
NASA scientists discover what two places in the solar system might have favorable conditions for alien life.
16 April, 2017
An illustration of an image from the Cassini spacecraft of Enceladus' south pole, showcasing its icy plume. Credits: NASA/JPL-Caltech
<p class="p1">NASA scientists announced its <a href="https://youtu.be/-nzaFDkDU7c" target="_blank">Cassini</a> spacecraft found evidence that the ocean on <strong>Enceladus</strong>, one of Saturn’s 62 moons, may contain all the ingredients necessary for the emergence of life.</p> <p class="p1">Cassini flew through plumes of gas bursting out from under the ice covering the oceans and detected a clear presence of molecular <strong>hydrogen</strong>. This might indicate the existence of <strong>hydrothermal vents</strong> on the moon’s ocean floor. Such vents would be similar to Earth’s hydrothermal vents where <a href="http://bigthink.com/paul-ratner/is-this-where-all-life-on-earth-began" target="_blank">some scientists believe</a> life on our planet originated. </p> <p class="p1">In the new findings, <a href="http://science.sciencemag.org/content/356/6334/155" target="_blank">described the journal <em>Science</em></a>, scientists consider the possibility of a chemical reaction called <em>methanogenesis</em> taking place in the moon’s underwater vents. This reaction has been <a href="https://www.newscientist.com/article/dn8882-methane-making-microbes-appeared-early-on-earth/" target="_blank">shown to be crucial</a> to the development of microbial life by providing an energy source for the microbes.</p> <p class="p1">The researchers cannot at this point conclusively state if <em>methanogenesis </em>is indeed taking place under Enceladus’s ice. It is also possible that this moon may be too young to have undergone the life-creating process. </p> <blockquote>
<p class="p3"><span class="s1">“Although we can’t detect life, we’ve found that there’s a food source there for it. It would be like a candy store for microbes,” <a href="https://www.nasa.gov/press-release/nasa-missions-provide-new-insights-into-ocean-worlds-in-our-solar-system" target="_blank">said</a> the study’s lead author Hunter Waite</span><span class="s2"> of the Southwest Research Institute in San Antonio.</span></p>
</blockquote> <p class="p3"><span class="s2"><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQwOTgyOS9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYyNzY3MzE2Nn0.bEPkDn41pK7vBy6vY5AQQ4EAEpKOqhH9gwTnd3YJAXg/img.jpg?width=980" id="f6c1b" class="rm-shortcode" data-rm-shortcode-id="1c1efb88ff19a17e6c54b0e115cd8841" data-rm-shortcode-name="rebelmouse-image"><br></span></p> <div class="caption"><em>This is how Cassini scientists think water interacts with rock at the bottom of the ocean of Saturn's icy moon Enceladus, producing hydrogen gas. </em><em>Credits: NASA/JPL-Caltech</em></div> <p class="p5"><span class="s1">Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate in Washington, was also optimistic about the scope of Cassini’s current achievement.</span></p> <blockquote>
<p class="p7"><span class="s1">"This is the closest we've come, so far, to identifying a place with some of the ingredients needed for a habitable environment," <a href="https://www.nasa.gov/press-release/nasa-missions-provide-new-insights-into-ocean-worlds-in-our-solar-system" target="_blank"><span class="s3">stated Zurbuchen</span></a>.</span></p>
</blockquote> <p class="p9">Since 2004, the Cassini spacecraft provided no shortage of discoveries. As its head of imaging science Carolyn Porco <a href="http://www.sen.com/feature/an-interview-with-cassini-scientist-carolyn-porco.html" target="_blank">explained</a>, Cassini conducted over a 100 more “close flyby maneuvers” than have been done so far in the entire planetary program. </p> <p class="p9">It has given us an unprecedented understanding of Saturn, with stunning new images, insights into its rings, atmosphere and moons. </p> <p class="p9">In 2005, the spacecraft landed the Huygens probe on <strong>Titan</strong>, Saturn’s largest moon, a historic first for landing human machines in the outer solar system. The probe discovered a wealth of information, including an underground super-salty ocean. <span class="s4">The Cassini-Huygens mission was carried out in cooperation between NASA, the European Space Agency and the Italian Space Agency.</span></p> <p class="p12"><span class="s1">Here’s a film made by compiling imaging data from Cassini and the probe’s instruments as it descended towards Titan:</span></p> <p><span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="54961a0a547808f6152d46cc9e438190"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/TMxL3ZhO8A8?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span></p> <p class="p9">Cassini also came amazingly close to Jupiter, providing us with the best photos we have of the gas giant.</p> <p class="p9"><img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8xODQwOTgzMC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYzMTIxNDY4Mn0.p0QEpkpNkDAhHiwr0v1AZ79LrWauC4k1CB3J8R0-ilk/img.jpg?width=980" id="4e24c" class="rm-shortcode" data-rm-shortcode-id="1d197beca099203494b78e6082a81d97" data-rm-shortcode-name="rebelmouse-image"></p> <p class="p9"><em>Composite photo of Jupiter, comprised of images taken by Cassini on December 29, 2000. Credit: NASA.</em></p> <p class="p9">The spacecraft will be decommissioned on September 15, 2017 by being plunged to burn in Saturn’s atmosphere. The reason for just a drastic demise lies in the fear that Cassini will soon run out of fuel and crash into one of Saturn’s moons, the ones we now think may contain life. It’s safer for it to burn up on entry than possibly contaminate the moons.</p> <p class="p9">On its way down, the spacecraft will transmit more data and images. These will include new maps of Saturn’s magnetic and gravity fields, and details on the composition of the planet’s rings.</p> <blockquote>
<p class="p13"><span class="s1">"It’s inspiring, adventurous and romantic — a fitting end to this thrilling story of discovery," <a href="https://saturn.jpl.nasa.gov/mission/grand-finale/overview/" target="_blank"><span class="s5">wrote NASA</span></a></span><span class="s6">.</span></p>
</blockquote> <p class="p15"><span class="s1">Watch this beautiful new film from NASA on Cassini’s final journey:</span></p> <p><span style="display:block;position:relative;padding-top:56.25%;" class="rm-shortcode" data-rm-shortcode-id="eee3741f9a67f7008ed25b5f1a1ae815"><iframe type="lazy-iframe" data-runner-src="https://www.youtube.com/embed/xrGAQCq9BMU?rel=0" width="100%" height="auto" frameborder="0" scrolling="no" style="position:absolute;top:0;left:0;width:100%;height:100%;"></iframe></span></p> <p class="p15"><span class="s1">Notably, another NASA team just <a href="http://iopscience.iop.org/article/10.3847/2041-8213/aa67f8" target="_blank"><span class="s5">published findings</span></a> on a different ocean world that might have some form of life. Their paper on observations from the Hubble Space Telescope program showed new evidence of water vapor plumes found on Jupiter’s moon <strong>Europa</strong>. In fact, they think they spotted a huge 62-mile-high plume over Europa’s equator, in the same place a plume candidate was spotted in 2014.</span> </p> <p class="p15"><span class="s1">These warm plumes are thought to be potential hosts for life. Considering that Europa is billions of years older than Enceladus, the chances for life to have emerged there could actually be greater.</span></p> <p class="p15"><span class="s1"><img alt="Europa" height="1147" src="http://assets3.bigthink.com/system/tinymce_assets/5314/original/europa.jpg?1492329704" title="Europa" width="1720"></span></p> <p class="p15"><em><span class="s1">Europa. Credit: NASA</span></em></p>
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Hey Bill Nye! Why Don't Gas Giants Have Gas Moons?
A very small person asks a very big question: why aren't the moons of gaseous planets also made of gas?
09 December, 2016
It took a very small person to ask a big question, one that planetary scientists pondered for a long time. There are four gas giants in our solar system – Jupiter, Saturn, Uranus and Neptune – but why are their moons not made of gas? They’re solid, unlike the planets they orbit.
<p>As always, Bill Nye is on standby to explain the workings of the world and universe around us. The widely accepted theory on how Earth’s moon was created is known as the Giant Impact Hypothesisis. It states that a very young proto-Earth was struck by an asteroid, and in that collision both Earth and the debris that chipped off it became molten. They both cooled off, and now we have a moon; nicely spherical (although not perfectly) and solid, in orbit around us. </p>
<p>So why don’t gas giants have gas moons? The simple answer: gravity. When Jupiter or Saturn have undergone similar collisions or events that resulted in a fragment being spun off into their orbits, those new moons were too small to sustain themselves in a gaseous state. Gravity pulled the gas down until it formed a solid sphere. A gas giant, on the other hand, stays gaseous because of its size; there is so much heat generated from its spin that it cannot cool down into a solid state. Jupiter, for example, has 67 known moons and even the bigger ones like Io, Callisto, Europa and Ganymede, have cooled off – they're non-gaseous, unlike Jupiter itself. </p>
<p>Much can be learned after we know the state of moons; we now know that Europa has twice as much seawater as Earth, but that the water is under a crust of ice. One day, we may find life in those oceans – they’ve been around for 4.5 billion years, so it’s likely Europanians may be living there, says Nye. </p>
<p>Bill Nye's most recent book is <a href="http://www.indiebound.org/book/9781250007148"><i>Unstoppable: Harnessing Science to Change the World</i></a>.</p><p><a href="http://www.indiebound.org/book/9781250007148"><img height="150" src="%5Cr%5Cnhttps://s3.amazonaws.com/edge-misc-assets/Book+Covers/Bill+Nye+Unstoppable" width="225"></a></p>
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Top Video of 2016 #8: ‘Hey Bill Nye, Could the Government Be Hiding Extraterrestrials From Us?’
Peel off your tin-foil hat like a Hershey’s Kiss, because Bill Nye has a reality check for the alien conspiracy theorists out there.
25 August, 2016
Peel off your tin-foil hat like a Hershey’s Kiss, because Bill Nye has a reality check for the alien conspiracists out there. Roswell? Area 51? Vincent D'Onofrio as the roach alien in MIB? Bill Nye shoos them away, deeming each as unrealistic as the next.
<p>Nye has some experience when it comes to classified information – not much, he admits, but a little. He once had security clearance while working as an engineer on secret government planes, and although he did not visit Area 51 himself, colleagues with one level higher security clearance than him did go, and what did they find there? Planes. Lots of people, lots of planes, and zero trace of alien life. </p>
<p>The origin of alien conspiracies go back to 1947, when something mysterious fell out of the sky and crashed at a ranch near Roswell, New Mexico. It spurred curiosity and panic; claims emerged that the unknown object was an extraterrestrial spaceship. The government eased people’s minds by revealing that it was nothing but a standard weather balloon that had crashed – and of course, that was a filthy lie. The intrigue was quieted until the late 1970s, when UFO enthusiasts rediscovered the story and images and amped up the interest once again, developing conspiracy theories about alien crash landings. There was no closure until the 1990s, when the US military published reports disclosing what really happened in Roswell: it was an experimental US government spy balloon that had crashed, part of Project Mogul, an attempt to listen out for Soviet murmurs of nuclear testing. </p>
<p>It has been thoroughly investigated and officially debunked, but seeing as the government lied once, the heat on the theory has never really died in the hearts of passionate conspiracy theorists. </p>
<p>But Nye does not believe the government is concealing aliens from us for an even simpler reason: as we can see from the daily political scandals in the media, it is so hard for the government to keep anything a secret. </p>
<p>But he’s not quick to dismiss alien life, and is excited at the prospect of traces being discovered in the next 50 or 100 years, under the icy layers of Mars, or on Jupiter’s intriguing moon Europa. whether that’s a sizeable organism or a mere cell, or fossil. </p>
<p>So there's no reason to narrow your eyes at the government when you ponder alien life. Then again, it’s possible Bill Nye’s body was commandeered by the government using alien technology for the duration of this interview. Or maybe Nye is an alien. And he hangs out with Tupac and Elvis drinking green slime mojitos in a secret ET spa club way out in desert Nevada.</p>
<p>Bill Nye's most recent book is <a href="http://www.indiebound.org/book/9781250007148"><i>Unstoppable: Harnessing Science to Change the World</i></a>.</p><p><a href="http://www.indiebound.org/book/9781250007148"><img height="150" src="%5Cr%5Cnhttps://s3.amazonaws.com/edge-misc-assets/Book+Covers/Bill+Nye+Unstoppable" width="225"></a></p>
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