EXTRATERRESTRIAL LIFE

For the past half-century, humanity has been listening for alien radio transmissions but so far we appear to be the only ones broadcasting into the void. Astrobiologists now seek to narrow down the search by looking for other technological and biological signatures. In this video, I explore some of the methods by which they hope to do so and why the great silence of the universe is such a mystery. Patreon: https://www.patreon.com/lemmino Subreddit: https://www.reddit.com/r/lemmino Twitter: https://www.twitter.com/lemmin0 Facebook: https://www.fb.com/lemmin0 Discord: https://www.discord.gg/lemmino [Music] Chris Zabriskie - Stories About the World That Once Was https://soundcloud.com/chriszabriskie/stories-about-the-world-that-once-was Francis Preve - Seductress https://www.youtube.com/audiolibrary/music Chris Zabriskie - They Call It Nature https://soundcloud.com/chriszabriskie/they-call-it-nature Density & Time - Meadow https://www.youtube.com/audiolibrary/music [References] https://www.lemmi.no/post/the-great-silence#refs [Thumbnail] https://www.deviantart.com/lemmino/art/The-Great-Silence-774732562

NASA's Voyager 1 is the only man-made object to have entered the Interstellar Space. It is the farthest spacecraft from Earth. Where is it heading to? Will it encounter aliens? Watch the video to know! Music Info: Cinematic Documentary by AShamaluevMusic. Music Link: https://youtu.be/EcAX2cbsdRw Clips by NASA in public domain, clips by NRAO under Creative Commons Attribution 3.0 Unported license Link ➡️ http://creativecommons.org/licenses/by/3.0/ We're on Facebook ➡️ https://m.facebook.com/astrogeekz/ We're on Instagram ➡️ https://www.instagram.com/astrogeekz/?hl=en

ExoMars is the first mission to head to the Red Planet to seek signs of life, now or in the past. It's a massive scientific and technical challenge, and Euronews meets some of the team involved in this joint ESA-Roscosmos project in this month's edition of Space. Learn more about #ExoMars: http://bit.ly/ESAExoMars This video is also available in the following languages: German: https://youtu.be/FW2nteHwxEg French: https://youtu.be/3zzz0jFt9xY Italian: https://youtu.be/pDkt0Af3LNE Spanish: https://youtu.be/gWKr26f3WGI Portuguese: https://youtu.be/9FGBJsBHISc Greek: https://youtu.be/SH47tRiPeuY Hungarian: https://youtu.be/1BaSoeIzpto ★ Subscribe: http://bit.ly/ESAsubscribe Check out our full video catalog: http://bit.ly/SpaceInVideos Follow ESA on Twitter: http://bit.ly/ESAonTwitter On Facebook: http://bit.ly/ESAonFacebook On Instagram: http://bit.ly/ESAonInstagram On Flickr: http://bit.ly/ESAonFlickr ESA is Europe's gateway to space. Our mission is to shape the development of Europe's space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world. Check out http://www.esa.int/ESA to get up to speed on everything space related. Copyright information about our videos is available here: http://www.esa.int/spaceinvideos/Terms_and_Conditions

To learn to think like a scientist check out http://Brilliant.org/SpaceTime To repeat the space time maxim: it’s never aliens … until it is. So let’s talk about ‘oumuamua. You can further support us on Patreon at https://www.patreon.com/pbsspacetime Get your own Space Time t­-shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime Help translate our videos! https://www.youtube.com/timedtext_cs_... Previous Episode: Are Virtual Particles A New Layer of Reality? https://www.youtube.com/watch?v=ztFovwCaOik Hosted by Matt O'Dowd Written by Matt O'Dowd Graphics by Luke Maroldi Assistant Editing and Sound Design by Mike Petrow and Meah Denee Barrington Made by Kornhaber Brown (www.kornhaberbrown.com) Bialy & Loeb (2018) https://arxiv.org/pdf/1810.11490 Micheli et al. (2018) https://go.nature.com/2A9FncQ Last year a visitor came to our inner solar system. To us it looked like a faint spot of light, moving quickly relative to the fixed stars. We’d seen similar things countless times before – lonely rocks, remnants from the formation of our solar system, drifting on their endless orbits around the sun and faintly glimmering with its reflected light. Nothing unusual about such asteroids and comets, but what made this object special was its trajectory. It was not in orbit around the Sun at all. Rather, it appeared to have fallen in from interstellar space, and was on its way back out again. The object is 1I/2017 U1, better known as ‘Oumuamua. It’s the first chunk of interstellar space debris we’ve ever spotted passing through our solar system. It caused a justifiable stir at the time. Hell, WE even did an episode on it. Special thanks to our Patreon Big Bang, Quasar and Hypernova Supporters: Big Bang David Nicklas CoolAsCats Anton Lifshits Fabrice Eap Justin Lloyd Juan Benet Quasar Tambe Barsbay Mark Rosenthal Dean Fuqua James Flowers Vinnie Falco Hypernova Chuck Zegar Jordan Young Joseph Salomone John Hofmann Martha Hunt Matthew O’Connor Ratfeast Brent Mullins Donal Botkin Edmund Fokschaner Max Levine Thanks to our Patreon Gamma Ray Burst Supporters: Alexander Rodriguez Alexey Eromenko Brandon Cook Brandon Labonte Daniel Lyons David Crane Fabian Olesen Fauzan Ardhana Greg Allen Greg Weiss Jack Frosch James Hughes JJ Bagnell Jon Folks Joseph Emison Josh Thomas Kevin Warne Malte Ubl Mark Vasile Nathan Leniz Nicholas Rose Nick Virtue Scott Gossett Shannan Catalano Shawn Azman Tommy Mogensen سلطان الخليفي

Did you hear that astronomers from Harvard think that the interstellar asteroid Oumuamua was actually an alien solar sail? Is it aliens? Of course it's not aliens. But some day, it'll actually be aliens. Fraser Cain and Pamela Gay recorded this together without a live video. So this episode, we only have audio. But check out our channel for our normal Astronomy Cast episodes, live on Fridays!

An exploration of whether human civilization might be early in the curve as far as exocivilizations go. Also, I explore the possibility that there may some day be an explosion of intelligence in the Milky Way in the far future. www.patreon.com/johnmichaelgodier www.youtube.com/eventhorizonshow Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

The Fermi Paradox asks us where all the alien civilizations are? Today we will ask if the might be hiding in the Voids, from those between the stars to the massive Supervoids like the Boötes Void. Could they be home to Extraterrestrial Empires so large they dwarf even Kardashev-3 Civilizations? Visit our Website: http://www.isaacarthur.net Support us on Patreon: https://www.patreon.com/IsaacArthur SFIA Merchandise available: https://www.signil.com/sfia/ Social Media: Facebook Group: https://www.facebook.com/groups/1583992725237264/ Reddit: https://www.reddit.com/r/IsaacArthur/ Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content. SFIA Discord Server: https://discord.gg/v5UKTsz Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version: https://soundcloud.com/isaac-arthur-148927746/fermi-paradox-into-the-void Episode's Narration-only version: https://soundcloud.com/isaac-arthur-148927746/fermi-paradox-into-the-void-narration-only The Fermi Paradox:Into the Void Episode 160b, Season 4 E46b Writer: Isaac Arthur Editors: A.T. Long Darius Said Keith Blockus Matthew Campbell Mark Warburton Stuart Graham https://beyondnerva.wordpress.com Producer: Isaac Arthur Cover Artist: Jakub Grygier https://www.artstation.com/jakub_grygier Graphics Team: Fishy Tree https://www.deviantart.com/fishytree/ Jarred Eagley Jeremy Jozwik https://www.artstation.com/zeuxis_of_losdiajana Ken York of YD Visual https://www.facebook.com/YDVisual/ Mihail Yordanov Sergio Botero https://www.artstation.com/sboterod?fref=gc Narrator: Isaac Arthur Music: Lombus, "Cosmic Soup" https://lombus.bandcamp.com A.J. Prasad, "Staring Through, pt 2" https://www.youtube.com/watch?v=xA8-7qwaEPU

In this video, we discuss the space object Oumuamua and the odd traits that make scientists question its origin. Oumuamua was discovered in October of 2017 and was quickly denoted as an interstellar object, due to its have speeds in our solar system. Over the course of a few months, astronomers all over the world were able to determine the approximate size, shape, and composition of this object, however, it didn't match what scientists had previously expected an interstellar object to be like. Over time, the object was also varying in its trajectory slightly, which brought up many more questions regarding the origin of these disturbances and what could be happening. Recently, scientists at Harvard suggest that this could be a solar sail, created by some intelligent alien species, trying to understand planet Earth. In this video we walk through the different known facts about Oumuamnu, and why it may or may not be an alien spaceship. Thanks for watching! And consider subscribing if you enjoyed this video! Twitter: https://twitter.com/wolf_martian Facebook: https://fb.me/MartianWolf Patreon: https://www.patreon.com/MartianWolf Heading Home by Nekzlo @nekzlo Music provided by Free Music for Vlogs youtu.be/YGL35p7LLqo ------------------------------ • Contact the artist: @nekzlo www.instagram.com/nekzlo/ twitter.com/Nekzlo_Music open.spotify.com/artist/75LSn0DiQyH6LnHBT8fOEK ------------------------------ #Oumuamua #Comet #Alien

If you were to say something to an alien race, what would you say and how would you say it? Check out Seeker's new series about the Apollo missions here: https://www.youtube.com/watch?v=9wo1jasvnUg&list=PL6uC-XGZC7X6t9SWSCN0ETF6HWcxy6bVc Subscribe! https://www.youtube.com/user/DNewsChannel Read More: METI International http://meti.org/mission A direct communication proposal to test the Zoo Hypothesis https://www.sciencedirect.com/science/article/pii/S0265964616300285 One possible explanation for Fermi's Paradox is the Zoo Hypothesis which states that one or more extraterrestrial civilizations know of our existence and can reach us, but have chosen not to disturb us or even make their existence known to us. METI's First Message is a Music Lesson for Aliens https://www.wired.com/story/metis-first-message-is-a-music-lesson-for-aliens/ The meat of the transmission was carefully crafted by METI International—the alien hunters so serious about Messaging Extraterrestrial Intelligence that they splintered off from the SETI Institute to get more ambitious. It's the first information-rich message they've sent since forming in 2015. And with this bit of code, constructed in partnership with the Spanish Sónar music festival and the Institute of Space Studies of Cataloniar, they want to teach aliens about music—one radio wave pulse at a time. ____________________ Seeker inspires us to see the world through the lens of science and evokes a sense of curiosity, optimism and adventure. Visit the Seeker website https://www.seeker.com/ Subscribe now! https://www.youtube.com/user/DNewsChannel Seeker on Twitter http://twitter.com/seeker Seeker on Facebook https://www.facebook.com/SeekerMedia/ Seeker http://www.seeker.com/

An exploration into the recent paper by Bialy and Avi Loeb examining the possibility that the first discovered interstellar object 'Oumuamua or 1I/2017 U1 could be a type of natural or artificial light sail. Avi Loeb interview: https://youtu.be/VlpVIyBCG3s www.patreon.com/johnmichaelgodier Papers: "COULD SOLAR RADIATION PRESSURE EXPLAIN ‘OUMUAMUA’S PECULIAR ACCELERATION?", Bialy and Loeb, 2018 https://arxiv.org/pdf/1810.11490.pdf Music: Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

Carl Sagan on the search for life. This video was made for The Planetary Society in 1983. "Are there other worlds like the Earth? Graced by life?" -Carl Sagan "Subscribe to our YouTube Channel: http://planet.ly/ytsubscribe Follow us! Facebook: http://www.facebook.com/planetarysociety Twitter: http://www.twitter.com/exploreplanets Instagram: http://www.instagram.com/planetarysociety On the web: http://www.planetary.org ---- Join us: http://www.planetary.org/join Stay in touch with our monthly e-newsletter: http://www.planetary.org/connect About The Planetary Society: The Planetary Society has inspired millions of people to explore other worlds and seek other life. With the mission to empower the world's citizens to advance space science and exploration, its international membership makes the non-governmental Planetary Society the largest space interest group in the world. Carl Sagan, Bruce Murray and Louis Friedman founded the Planetary Society in 1980. Bill Nye, a longtime member of the Planetary Society's Board, serves as CEO."

According to a report by Business Insider, scientists at Harvard have raised the possibility that a mysterious cigar-shaped interstellar object, the first of its kind in our solar system, could be a probe intentionally sent toward Earth from an alien civilization. Named, "Oumuamua," which means "a messenger from afar, arriving first," the object was first spotted in October of 2017 by a telescope in Hawaii. The metal-rich object, reportedly moving remarkably fast but not circling our sun, was about 750 feet by 115 feet and reddish in color. https://www.businessinsider.com/harvard-scientists-interstellar-oumuamua-object-alien-probe-2018-11 http://www.wochit.com This video was produced by YT Wochit News using http://wochit.com

A recent MIT study found that existing technology could be used as a “porch light” of sorts to let aliens know that we’re here.

Astrophysicists say 'Oumuamua might be an alien object.

An exploration of ten of the most unsettling astrophysical events including Dyson Sphere candidates, a star containing plutonium, the Wow! Signal and others. https://www.patreon.com/johnmichaelgodier https://www.youtube.com/eventhorizonshow Papers: "Pulsar Positioning System: A quest for evidence of extraterrestrial engineering", Clement Vidal, 2017 https://arxiv.org/abs/1704.03316 "Fast Radio Bursts from Extragalactic Light Sails", Lingham and Loeb, 2017 https://arxiv.org/abs/1701.01109 "Discovery of peculiar periodic spectral modulations in a small fraction of solar type stars", Borra and Trottier, 2016 https://arxiv.org/abs/1610.03031 Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ "Night Forever" by Miguel Johnson https://migueljohnson.bandcamp.com/ Cylinder Three by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

Listen will undertake a major observing program using the new MeerKAT array in South Africa. MeerKAT combines 64 individual dishes as a single instrument to be used by teams from across the globe in pursuit of a range of science goals. Listen’s MeerKAT search for signs of extraterrestrial technology will operate 24 hours a day, seven days a week, operating in parallel with the other surveys. Listen's survey will examine a million individual stars in the quietest part of the radio spectrum, a factor of 1000 more targets than any previous search.

These hangouts are sponsored by OPT Telescopes: https://optcorp.com/collections/pro-services? utm_source=deepastronomy&utm_medium=telescopetalk&utm_campaign=pro https://optcorp.com/collections/pro-services?utm_source=deepastronomy&utm_medium=telescopetalk&utm_campaign=pro To find a technical civilization however, requires more than bio-markers, we need "technomarkers" or "technosignatures" that reveal the presence of any technology that an exoplanet might possess. One possibility is a "Clarke Exobelt", a region in space around planets called the "Clarke Belt," in honour of Arthur C. Clarke, who in 1945, published an article about the use of geostationary orbits for telecommunications. In this belt are geostationary satellites used for a large number of practical applications. Please join Tony Darnell and Christian Ready as they discuss this idea with Hector Socas-Navarro an astronomer at the Instituto de Astrofisica de Canarias and author of a paper "Possible Photometric Signatures of Moderately Advanced Civilizations: The Clarke Exobelt" Link to the Paper: https://drive.google.com/open?id=1LpeEmGaD9iDu-bl6y39LGHvRpBe63GfX Link to the press release: https://phys.org/news/2018-06-clarke-exobelt-method-extraterrestrial-civilizations.html Like this content? Please consider becoming a patron: https://patreon.com/DeepAstronomy Follow DeepAstronomy on Twitter: @DeepAstronomy Join our free Discord server for always-on chat action! https://discord.gg/nqGpvtK

With a record number of exoplanets in this star’s habitable zone, the TRAPPIST-1 system is a likely contender for biological life beyond our solar system. Watch More Space Crafts! | https://bit.ly/2w0YKD1 Read More: TRAPPIST-1 | About http://www.trappist.one/#about “The TRAPPIST-1 worlds are the most optimal currently at our disposal. They are providing humanity with its first opportunities at discovering evidence of biology beyond the Solar system.” TRAPPIST-1 Planets Are Even More Like Earth Than We Thought https://www.popularmechanics.com/space/deep-space/a16573908/trappist-1-planets-are-even-more-like-earth-than-we-thought/ “The TRAPPIST-1 system is made up of seven roughly Earth-sized planets orbiting a dwarf star around 39 light-years away and is often hailed as the most likely place for life outside our solar system that we know of. A new study offers further insight into each TRAPPIST planet's biological properties and the signs are encouraging.” New Clues to TRAPPIST-1 Planet Compositions, Atmospheres https://www.nasa.gov/feature/jpl/new-clues-to-trappist-1-planet-compositions-atmospheres “In the year since NASA announced the seven Earth-sized planets of the TRAPPIST-1 system, scientists have been working hard to better understand these enticing worlds just 40 light-years away.” ____________________ Seeker inspires us to see the world through the lens of science and evokes a sense of curiosity, optimism and adventure. Visit the Seeker website http://www.seeker.com/ Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel Seeker on Twitter http://twitter.com/seeker Seeker on Facebook https://www.facebook.com/SeekerMedia/ Space Crafts on Facebook https://www.facebook.com/SeekerSpaceCrafts/ Seeker http://www.seeker.com/

You can now support us on Patreon! https://www.patreon.com/EventHorizonShow Event Horizon's Website: https://www.eventhorizonshow.com/ Follow us on Twitter and Instagram @JMGEventHorizon https://twitter.com/jmgeventhorizon https://www.instagram.com/jmgeventhorizon In our first episode of John Michael Godier's Event Horizon, we discuss the possibility of Alien civilizations moving to Galaxy Clusters to make the best use of mass and energy, why making copies of ourselves may be the key to interstellar travel and colonization, the habitability of planets around red dwarf stars such as Proxima Centauri, Black Holes, and so much more with our first guest Harvard Theoretical Physicist Dr. Avi Loeb, the Frank B. Baird Jr. Professor of Science at Harvard University. Is Oumuamua a Light Sail? With Avi Loeb: https://youtu.be/VlpVIyBCG3s Dr. Avi Loeb’s website https://www.cfa.harvard.edu/~loeb/ From the First Star to Milkomeda By Dr. Avi Loeb https://www.amazon.com/First-Star-Milkomeda-Abraham-Loeb-ebook/dp/B014GCTXF0 A list of Dr. Loeb's commentaries and most recent essays in Scientific American: https://www.cfa.harvard.edu/~loeb/Opinion.html https://www.scientificamerican.com/author/abraham-loeb/ Dr. Loeb's most recent public lecture on The Search for Life: https://www.youtube.com/watch?v=987t23Tqyrc John Michael Godier's books: https://amzn.to/2yBPLu0 CREDITS FOOTAGE NASA JPL ESO HUBBLE PIXABAY MUSIC STELLARDRONE "ULTRA DEEP FIELD" "AIRGLOW" "LIGHT YEARS" "THE DIVINE COSMOS" "GRAVITATION" "ETERNITY" "I DON'T BELONG HERE" "TRANQUILITY" "ASCENT" https://stellardrone.bandcamp.com CHRIS ZABRISKIE "CYLINDER 8" "CYLINDER 7" "CYLINDER 9" http://chriszabriskie.com KAI ENGEL "ENDLESS STORY ABOUT SUN AND MOON" "SNOWFALL" "MAREE" "ASPIRATO" https://www.kai-engel.com/ Hosted by John Michael Godier ANNA voiced by Eryn Knight Produced and Directed by Ross Campbell Created and Written by John Michael Godier Ross Campbell Eryn Knight For Business or Booking Enquiries Producer (at) johnmichaelgodier.com

An exploration of the possibility of imaging exoplanets and exocivilizations. Event Horizon: https://www.youtube.com/eventhorizonshow Papers: "Exoplanet Terra Incognita", S. Berdyugina et al., 2018 https://arxiv.org/pdf/1809.05031.pdf Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

We tend to overlook gas giants when we are thinking of alien life on a planet but we should not dismiss them. In this video i explain as to how life could operate on a gassy planet. Twitter: https://twitter.com/Dreksler_Astral Intro, outro and other clips in the video were made with Space Engine. Idea for the video is gotten by Cosmos: A Personal Voyage which is made by Carl Sagan. Music: Kevin MacLeod - Martian Cowboy https://incompetech.com/

You can now support us on Patreon! https://www.patreon.com/EventHorizonShow Event Horizon's Website: https://www.eventhorizonshow.com/ Follow us on Twitter and Instagram @JMGEventHorizon https://twitter.com/jmgeventhorizon https://www.instagram.com/jmgeventhorizon/ In this clip from our first episode of John Michael Godier's Event Horizon. We discuss the possibility of Alien civilizations moving to Galaxy Clusters to make the best use of mass and energy and why making copies of ourselves may be the key to interstellar travel and colonization, with my first guest theoretical physicist Dr. Avi Loeb, the Frank B. Baird Jr. Professor of Science at Harvard University. The full feature length episode premieres Sept. 20.

Is climate change inevitable on worlds with technological civilizations? Is planetary feedback from such a civilization a great filter? Our guest Dr Adam Frank will discuss his paper on the effects of planetary feedback on any possible alien civilizations out there. Could it be possible that many (or even all) technological civilizations out there must face the consequences of climate change brought on by their technology? Does this prevent galactic colonization? Please join Tony Darnell, Carol Christian, and Adam Frank as we explore this very interesting topic. We invite you to interact with us as well and provide questions and comments! Like this content? Please consider becoming a patron: https://patreon.com/DeepAstronomy Follow DeepAstronomy on Twitter: @DeepAstronomy Link to our press release: http://www.rochester.edu/newscenter/astrobiology-alien-apocalypse-can-any-civilization-make-it-through-climate-change-322232/ Link to the paper: https://www.liebertpub.com/doi/pdf/10.1089/ast.2017.1671 Light of the Stars Book: http://rochester.edu/news/adam-frank-light-of-the-stars/ Join our free Discord server for always-on chat action! https://discord.gg/nqGpvtK

The universe is incredibly old, astoundingly vast and populated by trillions of planets -- so where are all the aliens? Astronomer Stephen Webb has an explanation: we're alone in the universe. In a mind-expanding talk, he spells out the remarkable barriers a planet would need to clear in order to host an extraterrestrial civilization -- and makes a case for the beauty of our potential cosmic loneliness. "The silence of the universe is shouting, 'We're the creatures who got lucky,'" Webb says. Check out more TED Talks: http://www.ted.com The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more. Follow TED on Twitter: http://www.twitter.com/TEDTalks Like TED on Facebook: https://www.facebook.com/TED Subscribe to our channel: https://www.youtube.com/TED

Have you heard the news? Cassini may be dead, but it's data is still very much alive! Check out out latest video about Cassini's exciting discovery in the plumes of Enceladus! Follow us on social media and our website! Facebook: https://facebook.com/ActiveGalacticVideos Twitter: https://twitter.com/activegalactic Instagram: https://instagram.com/activegalacticvideos Snapchat: @active_galactic Website: http://activegalacticvideos.com/ Check out some of our other videos: Highlights of the Cassini Mission https://youtu.be/JKAHESinAUw News article reference: https://news.nationalgeographic.com/2018/06/saturn-moon-enceladus-complex-organics-life-space-science/

While our search is still in its infancy, we haven't yet found any obvious signs of intelligent life in our galaxy. One reason could be that any advanced civilization out there may not have made it past a stage in its development where climate change became an issue. As technologies advance and use more resources on a planet, care needs to be taken that the planet's carrying capacity is not overwhelmed. This could lead to the demise of a civilization and prevent it from expanding to the stars. Our guests for this hangout have done some modelling on the possible consequences of advancing technology and its effects on the host planet. Please join Tony Darnell and Carol Christian as they discuss this interesting work with Adam Frank University of Rochester Jonathan Carroll-Nellenback, U Rochester and Lindsey Valich, the team members of this recent study. Links t the press release and paper: http://www.rochester.edu/newscenter/astrobiology-alien-apocalypse-can-any-civilization-make-it-through-climate-change-322232/ https://www.liebertpub.com/doi/10.1089/ast.2017.1671 Really good video on the downfall of Easter Island: https://www.youtube.com/watch?v=d6aEaMiDeUw Like this content? Please consider becoming a patron: https://patreon.com/DeepAstronomy Follow DeepAstronomy on Twitter: @DeepAstronomy Join our free Discord server for always-on chat action! https://discord.gg/nqGpvtK

Visit our sponsor, Brilliant: https://brilliant.org/IsaacArthur/ Watch Part 2: https://youtu.be/tbvmxo90F9I For today's 2-part episode we team again with John Michael Godier to discuss the future of humanity should we head out to colonize the galaxy and find it empty, and how we might end up encountering aliens even then. Visit our Website: http://www.isaacarthur.net Support us on Patreon: https://www.patreon.com/IsaacArthur SFIA Merchandise available: https://www.signil.com/sfia Social Media: Facebook Group: https://www.facebook.com/groups/1583992725237264/ Reddit: https://www.reddit.com/r/IsaacArthur/ Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content. SFIA Discord Server: https://discord.gg/v5UKTsz Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version: https://soundcloud.com/isaac-arthur-148927746/galactic-humanity-and-the-fermi-paradox Episode's Narration-only version: https://soundcloud.com/isaac-arthur-148927746/galactic-humanity-and-the-fermi-paradox-narration-only Credits: Galactic Humanity & the Fermi Paradox, part 1 Episode 143, Season 4, E28 Writers Isaac Arthur John Micheal Godier Cover Artist: Jakub Grygier https://www.artstation.com/jakub_grygier Graphics Team: Dath Biomech Jarred Eagley Jeremy Jozwik Justin Dixon Ken York Kristijan Tavcar LegionTech Studios https://hades9.com Mihail Yordanov Sergio Botero https://www.artstation.com/sboterod?fref=gc Narrators: Isaac Arthur John Michael Godier Music: Lombus, "Cosmic Soup" https://lombus.bandcamp.com Denny Schneidemesser, "Luminous Rays" https://soundcloud.com/denny-schneidemesser Aerium, "Fifth Star from Aldebran" https://www.youtube.com/channel/UCRnUJY3l5vIJFGsY3XvW4dQ Miguel Johnson, "So Many Stars" https://soundcloud.com/migueljohnsonmjmusic Lombus, "Hydrogen Sonata" https://lombus.bandcamp.com Don't forget to catch Part 2 and thanks for Watching! Part 2: https://youtu.be/tbvmxo90F9I

Part II of a collaboration with Isaac Arthur on the possibilities of a galactic human future and what that might entail. Part I: https://youtu.be/-eG6vKe3OY0 https://www.brilliant.org/JMG Our previous collaboration on the concept of Uplifting: https://youtu.be/QzaYnrrEKbU https://youtu.be/wfDHt68-ANU Music: Drone in D by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200044 Artist: http://incompetech.com/ Cylinder Three by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Lost Frontier by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1300039 Artist: http://incompetech.com/ Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Endless Story About Sun and Moon by Kai Engel is licensed under a Attribution-NonCommercial License. https://www.kai-engel.com/ Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

An exploration of SETI and the possibility of detecting alien von Neumann probes at focal points of stellar gravitational lensing. http://www.patreon.com/johnmichaelgodier Papers: "A novel SETI strategy targeting the solar focal regions of the most nearby stars" Gillon, 2013 https://arxiv.org/pdf/1309.7586.pdf Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

In this video I talk about the top 5 radio messages we sent to find extraterrestrial intelligence. If you enjoyed the video, please like, subscribe, activate the notifications and share it if you want. My channel is not monetized, so if you want to further support it, feel free to make a one-time donation: https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=7KXBWDY5PM8L4

An update in my continuing coverage on the possibilities for life at Saturn's Moon Enceladus. "Macromolecular organic compounds from the depths of Enceladus" Postberg et al, 2018 https://www.nature.com/articles/s41586-018-0246-4 Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

An exploration into the concept of population and how that affects the Fermi Paradox question. Do advanced alien civilizations necessarily have the population numbers to colonize the galaxy entirely? Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Cylinder Three by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Darkest Child by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100783 Artist: http://incompetech.com/

The Search for Extraterrestrial Intelligence (SETI) has been growing in confidence and repute lately thanks to astronomer's detections of habitable worlds and the private funding been poured into the enterprise. With renewed efforts afoot, it's worth pausing for a moment and asking - well what do we do if we succeed? How should the scientists communicate their results? How will the public react? Social media in particular disrupts the conventional pattern of scientific announcements and poses some interesting challenges for SETI. In this video we perhaps end up asking more questions than answers, but let's get into a discussion in the comments about how best to proceed! ::More about this Video:: ► International Academy of Astronautics Post Detect Protocol (1989): https://iaaseti.org/en/declaration-principles-concerning-activities-following-detection/ ► International Academy of Astronautics Post Detect Protocol (2010): http://resources.iaaseti.org/protocols_rev2010.pdf ► The Rio Scale paper, Almar & Tartar (2011): https://www.sciencedirect.com/science/article/pii/S0094576509003683 ► Rio Scale calculator: http://avsport.org/IAA/riocalc.htm ► Centauri Dreams blog article about the RATAN-600 signal: https://www.centauri-dreams.org/2016/08/27/an-interesting-seti-candidate-in-hercules/ ► Astronomy.com debunk the RATAN-600 signal: http://www.astronomy.com/news/2016/08/the-promising-seti-signal-probably-isnt-aliens ► World Science Festival: "Alien Contact: What Happens Next?": https://www.worldsciencefestival.com/programs/alien-contact-happens-next/ ► Columbia University Department of Astronomy: http://www.astro.columbia.edu ► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu ► Outro music by 8-bit Universe "Harder Better Faster Stronger [8 Bit Cover Tribute to Daft Punk]": https://8bituniverse.bandcamp.com/track/harder-better-faster-stronger-8-bit-tribute-to-daft-punk ::Playlists For Channel:: Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds Cool Worlds Research ► http://bit.ly/CoolWorldsResearch Guest Videos ► http://bit.ly/CoolWorldsGuests Q&A Videos ► http://bit.ly/CoolWorldsQA Tabby's Star ► http://bit.ly/TabbysStar Science of TV/Film ► http://bit.ly/ScienceMovies ::Follow us:: SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe Cool Worlds Lab http://coolworlds.astro.columbia.edu Twitter https://twitter.com/david_kipping Instagram https://www.instagram.com/cool.worlds THANKS FOR WATCHING!!

Humans are believed to be the most technologically advanced civilization that’s ever set foot on Earth, or really anywhere in the Solar System. But are we the first? Could there have been an advanced civilization that walked the Earth millions or even billions of years ago, and then died out long ago, their technology and structures lost to the eons. And how could we know? Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio Video Podcast version: ITunes: https://itunes.apple.com/bh/podcast/universe-today-video/id794057165?mt=2 RSS: https://www.universetoday.com/video What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain / [email protected] Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw Chad Weber - [email protected] Chloe Cain - Instagram: @chloegwen2001 References: https://arxiv.org/pdf/1704.07263.pdf https://arxiv.org/pdf/1804.03748.pdf https://www.theatlantic.com/science/archive/2018/04/are-we-earths-only-civilization/557180/ https://arxiv.org/pdf/1111.1212.pdf

The possibility that ancient civilizations might have encountered or even been influenced by extraterrestrials has fascinated us for as long as we knew there were distant suns they might visit from. Today we will examine the evidence and consider the numerous scenarios form the perspective of the Fermi Paradox, to see how reasonable the Ancient Aliens hypothesis is, and ask if the evidence of UFOs visiting us in the past is credible. Visit our Website: http://www.isaacarthur.net Support us on Patreon: https://www.patreon.com/IsaacArthur SFIA Merchandise available: https://www.signil.com/sfia Social Media: Facebook Group: https://www.facebook.com/groups/1583992725237264/ Reddit: https://www.reddit.com/r/IsaacArthur/ Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content. SFIA Discord Server: https://discord.gg/v5UKTsz Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version: https://soundcloud.com/isaac-arthur-148927746/ancient-aliens Episode's Narration-only version: https://soundcloud.com/isaac-arthur-148927746/ancient-aliens-narration-only Credits: Ancient Aliens & the Fermi Paradox Season 4, Episode 22 Writers: Isaac Arthur Editors: Darius Said Edward Nardella Jerry Guern Keith Blockus Mark Warburton Matthew Campbell Producer: Isaac Arthur Cover Artist: Jakub Grygier https://www.artstation.com/jakub_grygier Graphics Team: Isaac Arthur Jeremy Jozwik Ken York Kristijan Tavar Narrator: Isaac Arthur Music Manager: Luca De Rosa - [email protected] Music: Martin Rezny, "Lifelight" https://soundcloud.com/martin-re-n-1 Aerium, "Windmill Forests" https://www.youtube.com/channel/UCRnUJY3l5vIJFGsY3XvW4dQ Phase Shift, "Enigmatic" https://www.last.fm/music/Phase+Shift/_/Enigmatic Chris Zabriskie, "There's Probably No Time" http://chriszabriskie.com Lombus, "Hydrogen Sonata" https://lombus.bandcamp.com

Subscribe to Naked Science – http://goo.gl/wpc2Q1 Did comets bring water, organic material, or even life itself to Earth? Panspermia is the controversial hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids, comets, planetoids, and also by spacecraft in the form of unintended contamination by microorganisms. Clip taken from the Naked Science documentary “Comets”. Watch it here – Coming soon!

An exploration of whether galaxy spanning empires are feasible or not as a solution to the Fermi Paradox. https://www.patreon.com/johnmichaelgodier Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Cylinder Five by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/ Space X-plorers Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 License http://creativecommons.org/licenses/by/3.0/

A group of scientists has claimed that octopuses came from outer space.

In this week's questions show, the viewers try to suggest names for balloon rockets. Could live from Venus escaped to Earth? Is the Fermi Paradox really a paradox when we've only explored a little bit of the galaxy? And More Audio Podcast version: ITunes: https://itunes.apple.com/us/podcast/universe-today-guide-to-space-audio/id794058155?mt=2 RSS: https://www.universetoday.com/audio Video Podcast version: ITunes: https://itunes.apple.com/bh/podcast/universe-today-video/id794057165?mt=2 RSS: https://www.universetoday.com/video What Fraser's Watching Playlist: https://www.youtube.com/playlist?list=PLbJ42wpShvmkjd428BcHcCEVWOjv7cJ1G Weekly email newsletter: https://www.universetoday.com/newsletter Support us at: http://www.patreon.com/universetoday More stories at: http://www.universetoday.com/ Follow us on Twitter: @universetoday Like us on Facebook: https://www.facebook.com/universetoday Google+ - https://plus.google.com/+universetoday/ Instagram - http://instagram.com/universetoday Team: Fraser Cain - @fcain / [email protected] Karla Thompson - @karlaii / https://www.youtube.com/channel/UCEItkORQYd4Wf0TpgYI_1fw Chad Weber - [email protected] Chloe Cain - Instagram: @chloegwen2001 Omar Ismail Hi Fraiser. Do you think its possible for intelligent life to have started out on venus when the sun was cooler and it had liquid water and as it heated up been forced to move to earth as the runaway greenhouse effect took hold and theres no remnants of it coz of the pressure and heat? YX Yang Come on, you can’t just call it a paradox when you only examined 0.000017% of the galaxy. Jim Becker Fraser: I just read your article in Universe Today titled "Breathing lunar dust could give astronauts bronchitis and even lung cancer" and would like to know if those same conditions could cause problems for astronauts that go to Mars ? Rudi von Staden Why not have caesar dock with ISS to return the sample? Seems having the sample packaged in a separate reentry vehicle is both risky and expensive. Or would the physics of matching the velocities of caesar and the ISS be too complicated? Michael Arsenault Can we grab asteroids and bring them back to earth for a controlled entry to a desert somewhere? Or is this too dangerous due to contamination of the atmosphere? Roxane Urmanski I really love your Q&A episodes; I learn all sorts of things I've never thought of. Anyways, of all the videos I've seen about humans living on Mars, I don't think it's ever been mentioned that they need some sort of plan for the moons. What will happen when Diemos leaves and Phobos smashes into Mars? eric thatcher Hi Fraser, Great vids as usual. If we wanted to terraform Venues using an asteroid to create a global winter how big would it need to be. Also might need to speed up it rotation to create an earth like environment. White Dinosaur Why not launch from a high mountain ? ozdergecko Yesterday (!) Greg&Mitch (ASAPscience) gave the actual estimated numbers on incoming and outgoing matter. It's 40,000 metric tons in and 95,000 out. Twirlip Of The Mists I don't get the interest in lava tubes. More work and more exotic technology are needed than just digging a trench, dropping a hab into the trench, and covering the trench. Even a gigantic trench is easier. Safer, too. Lava tubes will make good short term (weeks, months) campsites for explorers who can't bring bulldozers. Better to build permanent sites from scratch. Star Butterfly How far does gravity reach? Am i correct to believe it's infinite? Say we had an empty non moving universe. If we were to place two galaxies say 20 billion light years apart with no motion in relation to one another would they eventually over billions or trillions of years drift closer together? Casey Chapman Finally... It’s good to hear someone else state what I’ve been saying for years! Why spend all the effort climbing out of your home gravity well, just to throw yourself into another, probably less hospitable one?!? You want humanity to spread out, start mass production of O’Neil cylinders with material mind from the moon and asteroids. I figure that that’ll give us a better backup than planting bucketloads of people on Mars. Go to Mars, to explore and search for signs of past or present life, but do it from orbit using telepresence. Hell, build a giant spacecraft with a rotating section, a NIRVA or VASIMR engine and a few hundred scientists aboard to explore the entire solar system... it’s five year mission to seek out new life and new civi... (ummm comets?) to boldly go were on one has gone before! (Except a few robotic missions of course!) Sorry... geek moment.

Earth can be a really loud place if you’re searching for an extraterrestrial signal. So how does SETI sift through all the cosmic noise to hunt for alien signals? How Eyes Evolved to See the World Differently https://www.youtube.com/watch?v=zsuSfkr3I10&t=134s Subscribe now! https://www.youtube.com/user/DNewsChannel Read More: Finding Artificial Signals: Lights in the Dark https://seti.berkeley.edu/listen/research.html “Finding extraterrestrial intelligence ought to be easy. Simply point a sensitive radio detector at the sky, and look for narrow-band signals. Unfortunately, it’s not that easy. Radio frequencies are full of artificial signals generated by humans, many of which look very similar to the kinds of signals SETI experiments are trying to detect.” Scientists Hear Two Even More Ancient Black Holes Collide https://www.smithsonianmag.com/science-nature/gravitational-waves-even-more-ancient “Hypothesized by Einstein a century ago, the identification of these ripples in space-time – for the third time, no less – is fulfilling the promise of an area of astronomy that has enticed scientists for decades, but had always seemed to lie just out of our reach.” There Actually Is Sound in Outer Space https://gizmodo.com/there-actually-is-sound-in-outer-space-1738420340 “You’ve heard it before: In space, no one can hear you scream. That’s because sound doesn’t move through a vacuum, and everyone knows that space is a vacuum. The thing is, that’s not completely true.” ____________________ Seeker inspires us to see the world through the lens of science and evokes a sense of curiosity, optimism and adventure. Visit the Seeker website https://www.seeker.com/ Subscribe now! https://www.youtube.com/user/DNewsChannel Seeker on Twitter http://twitter.com/seeker Seeker on Facebook https://www.facebook.com/SeekerMedia/ Seeker http://www.seeker.com/

The weirdest space story is about a star named, Tabby, whose bizarre blinking can't be explained. Stream Full Episodes Now: https://www.sciencechannel.com/ Download the Science Channel GO app! Subscribe to Science Channel: http://bit.ly/SubscribeScience Facebook: https://www.facebook.com/ScienceChannel Twitter: https://twitter.com/ScienceChannel

An exploration of the ramifications of an infinite universe on the prospects of alien life. https://www.patreon.com/johnmichaelgodier Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

An exploration of the idea that we may be among the first civilizations to appear in the universe, but in the future there may be many more. www.patreon.com/johnmichaelgodier Papers: "Relative Likelihood for Life as a Function of Cosmic Time", Loeb et al, 2016 https://arxiv.org/pdf/1606.08448v2.pdf Music: Cylinder Eight by Chris Zabriskie is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://chriszabriskie.com/cylinders/ Artist: http://chriszabriskie.com/

Night Sky Network members joined us on April 25, when Dr. Bruce Damer and Prof. David Deamer from NASA's Astrobiology Institute shared the latest research into the origins of life in the universe. In recent years, an approach to the long standing question of "how did life begin?" has returned to Charles Darwin's original intuition of "a warm little pond". Evidence from chemistry, geology and complexity science is accumulating to support a beginning for life on Earth, over four billion years ago, in fluctuating hot spring pools. Dr. Damer and Prof. Deamer will outline their new scenario and take us out into the solar system to Mars, Enceladus and beyond to exoplanets to address how this might inform our search for evidence life in the universe.

Astronomers have been looking for signs of extraterrestrial signals for decades, and not yet found any. Today we will examine the notion of Interstellar Beacons and ask just how far away you can be heard if you want to be. Visit our Website: http://www.isaacarthur.net Support us on Patreon: https://www.patreon.com/IsaacArthur SFIA Merchandise available: https://www.signil.com/sfia Social Media: Facebook Group: https://www.facebook.com/groups/1583992725237264/ Reddit: https://www.reddit.com/r/IsaacArthur/ Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content. Listen or Download the audio of this episode from Soundcloud: Alien Beacons Audio-only version: https://soundcloud.com/isaac-arthur-148927746/alien-beacons Alien Beacons Narration-only version: https://soundcloud.com/isaac-arthur-148927746/alien-beacons-narration-only Credits & Notes: Alien Beacons Season 4, Episode 17 Writers: Isaac Arthur Editors: Darius Said Edward Nardella Keith Blockus Jerry Guern Mark Warburton Sigmund Kopperud Producer Isaac Arthur Cover Artist Jakub Grygier https://www.artstation.com/artist/jakub_grygier Graphics Team: Jarred Eagley Jeremy Jozwik Justin Dixon Luuk Warringa Nick Nieuwoudt Sergio Botero: https://www.artstation.com/sboterod?fref=gc Narrator: Isaac Arthur Music Manager: Luca De Rosa - [email protected] Music: Markus Junnikkala, "Mobilize The Fleets" https://www.markusjunnikkala.com/ Aerium, "2 Drowned Holodecks" https://www.youtube.com/channel/UCRnUJY3l5vIJFGsY3XvW4dQ Denny Schneidemesser, "Echoes" https://soundcloud.com/denny-schneidemesser Miguel Johnson, "Alone in the Dark" https://soundcloud.com/migueljohnsonmjmusic Dan Macleod, "The End" https://neptuneuk.bandcamp.com/track/imperium Markus Junnikkala, "They Muddy the Water" Aerium, "Parks" Denny Schneidemesser, "Acervus Vastatio"

Consider supporting Space Fan News: https://patreon.com/DeepAstronomy to ensure you get current space & astronomy news each week! In this episode, on this day of the momentous second data release of the Gaia spacecraft, astronomers from the University of Uppsala in Sweden have been working on a way to find Dyson Spheres and other megastructures that may be around other stars in our galaxy that would provide our first confirmation of other civilizations in the Milky Way Galaxy. Paper "SETI WITH GAIA: THE OBSERVATIONAL SIGNATURES OF NEARLY COMPLETE DYSON SPHERES" https://arxiv.org/pdf/1804.08351.pdf Dyson Sphere Art by Adam Burn: https://adamburn.deviantart.com/art/SHield-World-Construction-118068881 Gaia DR2 Video: https://www.youtube.com/watch?v=VINs-JcNmKs Space Fan News Theme by Stephen Dubois available for download here: http://ancienteyesmusic.com Space Fan News Background Music by Colour the Landscapes: https://colourthelandscapes.bandcamp.com/ Follow DeepAstronomy on Twitter: @DeepAstronomy Like DeepAstronomy on Facebook: https://www.facebook.com/DeepAstronomy/ Like Space Fan News on Facebook: https://www.facebook.com/SpaceFanNews/

Life does not need to many conditions to exist, in fact there might be life forms in the Solar System right now outside of the Earth. So how many are there aliens in the observable universe? In this video i give my estimate on the number of aliens. My twitter: https://twitter.com/Dreksler_Astral Intro, outro and other clips in the video were made with Space Engine. Music: 1. Event Departure - Silent Partner 2. Space Coast - Topher Mohr and Alex Elena

Earthlings have been unsuccessful in the ongoing quest to find aliens from outer space. Here are three scary possibilities for why that has been the case.

Consider supporting Space Fan News: https://patreon.com/DeepAstronomy to ensure you get current space & astronomy news each week! New observations of two supernovae: The Crab Nebula and Cassieopia A show wildly differing amounts of a vital component for life to thrive: Phosphorus. A team of astronomers from the University of Cardiff in Wales have measured these two supernovae in an attempt to find out how Phosphorus was distributed throughout the galaxy. What they found was surprising and rather bad news for those of us hoping to find a galaxy teeming with life. Space Fan News Theme by Stephen Dubois available for download here: http://ancienteyesmusic.com Space Fan News Background Music by Colour the Landscapes: https://colourthelandscapes.bandcamp.com/ Follow DeepAstronomy on Twitter: @DeepAstronomy Like DeepAstronomy on Facebook: https://www.facebook.com/DeepAstronomy/ Like Space Fan News on Facebook: https://www.facebook.com/SpaceFanNews/

Earthlings have been hard at work looking for alien life, but a recent study suggests that there may not be much of it to find.