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What would intelligent aliens look like? How Extraterrestrials may evolve

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  • Imagine Alien Life | Known Universe

    1:14

    What would aliens on other planets actually look like?
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  • What Do Alien Civilizations Look Like? The Kardashev Scale

    11:41

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    The observable universe is a big place that has been around for more than 13 billion years. Up to two trillion galaxies made up of something like 20,000 billion billion stars surround our home galaxy. In the milky way alone scientists assume there are some 40 billion earth like planets in the habitable zone of their stars. When we look at these numbers it is hard to imagine that there is nobody else out there.


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  • What would alien life actually look like? | BBC Ideas

    6:43

    Spock? Predator? The classic humanoid body shape with big eyes? We don't think so. Biologist Adam Hart and illustrator Memo Kosemen combine their skills to predict how natural selection could see alien life evolve on a variety of alien worlds.

    Made by ClearStory.

    If you enjoyed this video, you might also be interested in MIT quantum astrochemist Clara Sousa-Silva wondering if aliens are already watching us ????

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  • Intelligent Life on Other Planets: What are the Odds?

    53:23

    Title: Intelligent Life on Other Planets: What are the Odds?
    Speaker: Corbin Covault, PhD
    Date: October 29, 2019

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  • Alien Contact: What Happens Next?

    1:11

    Are we alone in this vast universe? Some think that’s highly unlikely. With new technologies joining the search, NASA estimates we’ll find definitive evidence of aliens within 20 to 30 years. Which raises the vital question: And then what? Will the news inspire jubilation, despair, or fear? Will aliens be seen as gods or interlopers? Evidence of alien life will provoke fundamental questions about our place in the universe–not just about who they are, but also who we are. Join astronomers, astrobiologists, anthropologists, philosophers, and linguists as we ponder these issues.

    PARTICIPANTS: Kathryn Denning, David Kipping, Karen Lewis, and Marcelo Magnasco

    MODERATOR: Wendy Zukerman

    MORE INFO ABOUT THE PROGRAM AND PARTICIPANTS:

    This program is part of the BIG IDEAS SERIES, made possible with support from the JOHN TEMPLETON FOUNDATION.

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    TOPICS:

    00:00 - Participant intros
    1:50 - How are scientists searching for intelligent life?
    5:10 - Sending messages into space
    6:59 - What kind of alien signal are we likely to detect?
    9:00 - Would we be able to interpret an alien signal?
    13:44 - What is the closest that intelligent life could be to Earth?
    16:25 - How would we know if far away transmitting civilizations still exist?
    20:00 - How well can we communicate with dolphins?
    24:19 - Dolphin research film
    26:27 - Understanding dolphins vs. understanding aliens
    28:44 - What are the steps to understand an alien language?
    38:02 - What happens on earth after we contact alien life?
    44:40 - War of the Worlds broadcast controversy and damage
    46:40 - Will the discovery of aliens unite humanity?
    50:39 - What if we’re alone in the universe?
    53:10 - Could AI help us find aliens?
    54:20 - Using our children to bridge languages and species

    PROGRAM CREDITS:

    - Produced by John Plummer
    - Associate Produced by Laura Dattaro

    This program was recorded live 6/3/18 at the World Science Festival and has been edited and condensed for YouTube.

  • Why Alien Life Would be our Doom - The Great Filter

    9:36

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    Finding alien life on a distant planet would be amazing news - or would it? If we are not the only intelligent life in the universe, this probably means our days are numbered and doom is certain.


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    Why Alien Life Would be our Doom - The Great Filter

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  • Astrobiology and the Search for Extraterrestrial Life - with Ian Crawford

    35:56

    What can modern results in astrobiology tell us about the prospects for finding intelligent life elsewhere in the Universe?
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    The famous Drake equation, which provides a rough estimate of the number of civilisations in our galaxy, predicts that space should be teaming with aliens. So where are they and why have we not found them yet?

    Watch the Q&A here:

    Ian Andrew Crawford is professor of planetary science and astrobiology at Birkbeck, University of London. Crawford is a specialist in the science and exploration of the Moon and in the search for life in the Universe. Before switching his research interests to planetary science in 2003, Crawford had a 15-year career at University College London as an observational astronomer specialising in studies of the interstellar medium. He is the author of over 130 peer-reviewed research papers in the fields of astronomy, planetary science, astrobiology and space exploration. Crawford is a Fellow, and currently Vice President, of the Royal Astronomical Society, and a former member of the European Space Sciences Committee (ESSC) of the European Science Foundation. In 2014 he was appointed to the European Space Agency's Human Spaceflight and Exploration Science Advisory Committee (HESAC).

    This talk and Q&A were filmed at the Ri on 16 October 2017.

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  • Why Cant We See Evidence of Alien Life?

    6:04

    Stand by for an animated exploration of the famous Fermi Paradox. Given the vast number of planets in the universe, many much older than Earth, why haven't we yet seen obvious signs of alien life? The potential answers to this question are numerous and intriguing, alarming and hopeful.

  • Extraterrestrials - Why Theyre Almost Certainly Out There... | Chris Crowe | TEDxJohnLyonSchool

    10:25

    “Our galaxy is home to billions of habitable planets. Chris Crowe guides us through the heavens on a journey to explore how many Earth-like planets our Universe contains. By examining the latest exoplanet discoveries he conveys his confidence that they’re definitely out there somewhere…

    Chris Crowe is an astrophysicist, teacher,
    and public lecturer. A Fellow of the Royal
    Astronomical Society, he works as Head of
    Astronomy at Harrow School, teaching
    Astronomy, Physics, Engineering and
    Computer Science. Chris received Masters’
    degrees in both Theoretical Physics and
    Mathematics before completing a PhD in
    Astrophysics, affording him the opportunity
    to be part of a research team studying relic
    radiation from the big bang, and work in
    the same department as the late Professor
    Stephen Hawking. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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  • Stephen Hawkings Stark Warning for Humans to Leave Earth

    3:06

    In one of his final on-camera appearances, iconic physicist Stephen Hawking issued a warning to humanity about the existential threats we face and how our survival depends on colonizing another planet.

    From the Series: Leaving Earth: Or How to Colonize a Planet

  • Brian Cox investigates a potential alien signal ???? ???? - BBC

    3:51

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    Stream original BBC programmes FIRST on BBC iPlayer ????

    Professor Brian Cox visits the people who run SETI - the Search for Extraterrestrial Intelligence - and investigates whether we once received a signal from another planet. This signal has never been seen again and is now infamously called the WOW signal.

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  • Alien Life: Will We Know It When We See It?

    1:33:30

    What are scientists looking for when searching for alien life? A lot, it turns out: the search for extraterrestrials requires the help from astronomers, planetary scientists, chemists, computer scientists, and geneticists, just to name a few. But are we barking up the wrong carbon-based tree? Could alien life develop in ways we haven't dreamed of here on Earth? Hear Paul Davies, Sara Seager, Jack Szostak, and other experts give updates on the search for life outside our planet in Alien Life: Will We Know It When We See It? part of the Big Ideas series at the 2014 World Science Festival.

    This program is part of the Big Ideas Series, made possible with support from the John Templeton Foundation.

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    Original Program Date: May 31, 2014
    Host: John Hockenberry
    Participants: Jack W. Szostak, Paul Davies, Sara Seager, Dimitar Sasselov

    Carl Sagan and the future of finding alien life. 00:00

    John Hockenberry's Introduction. 2:23

    Participant Introductions. 5:45

    How close are we to finding aliens? 6:48

    How can you detect exoplanets that far away? 10:03

    Kepler 186 system. 14:49

    What are the tools you use to find Exoplanets? 18:00

    Detecting beer drinkers at a football game. 24:18

    What are we looking for on the microbial level? 30:05

    What starts life on any planet? 36:04

    Who will we call when aliens land on earth? 41:28

    Processing in analog and digital with a two denominational cellular optometer. 49:30

    The awakening of extraterrestrial life from the Vatican. 54:00

    How we may have cheated to form life from other planets? 56:50

    If we look for life where water is located are we ignoring life everywhere else? 1:04:54

    Can you elaborate on the possibility life on ancient mars? 1:08:39

    What are the new tools coming online today? 1:11:20

    What is the direct imaging technique? 1:14:50

    Testing the pedals on a space telescope. 1:21:00

    The conditions on earth that we need for life elsewhere. 1:24:32

    Communication basics from extremophiles. 1:28:05

  • Calculating The Odds of Intelligent Alien Life - Jill Tarter

    7:27

    View full lesson:

    Could there be intelligent life on other planets? This question has piqued imagination and curiosity for decades. Explore the answer with the Drake Equation -- a mathematical formula that calculates the possibility of undiscovered life.

    Lesson by Jill Tarter; Animation by TED-Ed

  • In Search of Aliens: Proof that Humans are Not Alone | Full Episode

    42:02

    Ancient Astronaut Theory has existed in popular culture for nearly 50 years, asking the question whether extraterrestrials visited Earth in the remote past. Find out more in Season 1, Episode 10, The Alien Code.

    #InSearchOfAliens

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  • The human response to extraterrestrial life with Leen Decin

    1:1:39

    What is a habitable exoplanet? How many are there? And where are all the aliens? Exoplanets can serve as a test for the universal laws of biology. Could life have evolved on other planets as well? And what will happen when we find extraterrestrial life?

    Prof. Leen Decin (KU Leuven) exposes the current scientific understanding on extra terrestrial live. This talk was recorded live on Wednesday
    27 November 2019 at Atelier 210 in Brussels.
    For more cool science talks and dry-ice cocktails, visit:

    Science & Cocktails Brussels
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  • Bizarre Alien Life Forms | Known Universe: Alien Contact

    4:04

    Life on other planets would adapt to its environment and might be stranger than you could ever imagine.
    Known Universe: Alien Contact :
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    National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.

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    Bizarre Alien Life Forms | Known Universe: Alien Contact


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  • Alien Worlds Season 1 | Official Trailer | Netflix

    1:23

    Applying the laws of life on Earth to the rest of the galaxy, this series blends science fact and fiction to imagine alien life on other planets.

    Watch Alien Worlds, only on Netflix December 2:

    SUBSCRIBE:

    About Netflix:
    Netflix is the world's leading streaming entertainment service with over 195 million paid memberships in over 190 countries enjoying TV series, documentaries and feature films across a wide variety of genres and languages. Members can watch as much as they want, anytime, anywhere, on any internet-connected screen. Members can play, pause and resume watching, all without commercials or commitments.

    Alien Worlds Season 1 | Official Trailer | Netflix

  • Impact of the discovery of intelligent alien life | Taher Kathawala | TEDxYouth@Winchester

    8:52

    For the most part, Hollywood has done an unimaginative job in depicting intelligent aliens. There will be a momentous day in the future when we confirm the existence of intelligent extra-terrestrial life. Taher's talk discusses the impact of this.



    Taher is a student at GEMS Wellington Silicon Oasis. Dubai (UAE).

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

  • Aliens under the Ice – Life on Rogue Planets

    8:25

    Out in the vast coldness of outer space, there are planets that travel alone through darkness without the boundaries of a system. Here’s how this can happen – and why these frozen deserts might secretly harbor alien life.

    Sources:



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  • 3 moons and a planet that could have alien life | James Green

    10:40

    Is there life beyond Earth? Join NASA's director of planetary science James Green for a survey of the places in our solar system that are most likely to harbor alien life.

    TEDTalks is a daily video podcast of 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 much more.
    Find closed captions and translated subtitles in many languages at

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  • The Search for Primitive and Intelligent Life on Other Planets

    1:22:58

    Professor Abraham (Avi) Loeb, chair of the Astronomy department, Harvard University.
    Are we alone? Probably not, out of modesty - keeping in mind that about a quarter of all stars host a habitable Earth-size planet. Upcoming searches for primitive life will aim to detect oxygen or methane in the atmospheres of transiting planets. Searches for intelligent life will aim to detect artificial signals in the radio or optical bands, as well as artifacts such as megastructures, solar cells that are used to re-distribute light and heat on tidally-locked planets, industrial pollution or artificial light beams. Our own civilization is starting to study the feasibility of interstellar travel using a powerful laser beam pushing on a lightweight sail, the so-called Starshot Initiative. If successful, we might receive a signal from outer space stating: welcome to the interstellar club!.

  • Don’t Be Afraid of Messaging Extraterrestrial Intelligence | Douglas Vakoch | TEDxNormal

    13:12

    Dr. Vakoch is President of Messaging Extraterrestrial Intelligence (METI). As astronomers launch ambitious projects for Messaging Extraterrestrial Intelligence, alarmists worry that transmitting intentional radio and laser signals into space may provoke an alien invasion. These critics overlook one fundamental fact: it’s too late to hide. Any extraterrestrial civilization capable of coming to Earth to do us harm already knows we’re here through the accidental radio and television signals that have been streaming out from our home world over the past century, travelling at the speed of light. Rather than cower in our corner of the universe, we should grow up and reach out, sending a clear message that we want to make contact with other intelligence in the cosmos. Dr. Douglas Vakoch is president of METI International, a nonprofit scientific organization that transmits powerful, intentional radio signals to nearby stars, in the hope of eliciting a reply. As an elected member of the International Astronomical Union and the International Institute for Space Law, he explores the scientific and societal dimensions of the Search for Extraterrestrial Intelligence, or SETI. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

  • How Is The Search For Alien Life Going?

    7:14

    Bloomberg tech editor Nate Lanxon sat down with Senior Scientist at the Planetary Science Institute Dr Pamela L Gay to discuss who will make first contact with extraterrestrial life and unpack whether some of the fundamental things we believe about the universe are correct.

    Video by Abi Morgan

    #Space #Moonshot

    --------
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  • Is There Intelligent Life On Other Planets?

    8:02

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    Now that we know planets are common in our galaxy, how would we tell if one holds life? Sure, it will take incredibly powerful telescopes and ambitious new space missions, but what are we looking for? What are we listening for? How do we help other worlds know that we are here?

    Here's the thing: Life on Earth has an expiration date. No matter what humans do, our aging sun will eventually be so hot that we can't survive. If we want to live on, it will have to be beyond Earth. The only question is, will it be US who live on, or just our radio broadcasts and dead satellites?

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  • Is There Life Beyond Earth? – Sadhguru Answers

    4:05

    Are we alone in the universe? Sadhguru answers a question that has been bothering generations of stargazers and astrophysicists alike.

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    Yogi, mystic and visionary, Sadhguru is a spiritual master with a difference. An arresting blend of profundity and pragmatism, his life and work serves as a reminder that yoga is a contemporary science, vitally relevant to our times.

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  • Where are all the aliens? | Stephen Webb

    13:19

    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.

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  • Is The Octopus An Alien? | Mach | NBC News

    2:23

    The octopus certainly does look strange, with bugged-out eyes, suction-cup tentacles, and the ability to change color for camouflage. But a new paper in a peer-reviewed scientific journal posits that octopuses aren’t just strange: They are ALIENS. Literally.
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    Is The Octopus An Alien? | Mach | NBC News

  • 2020 Isaac Asimov Memorial Debate: Alien Life

    1:30:49

    Neil deGrasse Tyson, Frederick P. Rose Director of the Hayden Planetarium, hosts and moderates a lively discussion about how life might have formed on Earth and explores what alien life might look like elsewhere in the universe. What criteria do we use to classify life as we know it? Should the criteria be revised as we look for life on other worlds?

    Watch all the past Asimov debates:

    For a full transcript of this debate, visit:

    2018 Isaac Asimov Memorial Debate: Artificial Intelligence


    2017 Isaac Asimov Memorial Debate: De-Extinction


    2016 Isaac Asimov Memorial Debate: Is the Universe a Simulation?


    2015 Isaac Asimov Memorial Debate: Water, Water


    2014 Isaac Asimov Memorial Debate: Selling Space


    2013 Isaac Asimov Memorial Debate: The Existence of Nothing


    2012 Isaac Asimov Memorial Debate: Faster Than the Speed of Light


    2011 Isaac Asimov Memorial Debate: The Theory of Everything


    In 2020, the Museum is celebrating the legacy of Charles Hayden, whose vision made the Hayden Planetarium possible and brought the universe to New York City.

    2020 Asimov Panelists:

    Nathalie A. Cabrol
    Director, Carl Sagan Center for Research, SETI Institute

    Vera Kolb
    Professor of Chemistry, University of Wisconsin-Parkside

    Seth Shostak
    Senior Astronomer & Institute Fellow, SETI Institute

    Carol Cleland
    Director of the Center for the Study of Origins and Professor of Philosophy, University of Colorado

    Max Tegmark
    Director of the Foundational Questions Institute and Professor of Physics, MIT

    The late Dr. Isaac Asimov, one of the most prolific and influential authors of our time, was a dear friend and supporter of the American Museum of Natural History. In his memory, the Hayden Planetarium is honored to host the annual Isaac Asimov Memorial Debate—generously endowed by relatives, friends, and admirers of Isaac Asimov and his work—bringing the finest minds in the world to the Museum each year to debate pressing questions on the frontier of scientific discovery. Proceeds from ticket sales of the Isaac Asimov Memorial Debates benefit the scientific and educational programs of the Hayden Planetarium.

    #AlienLife #NeildeGrasseTyson #AsimovDebate #ExtraterrestrialLife #Intelligence #AMNH #ScienceDebate #ScienceLecture #AmericanMuseumofNaturalHistory #Aliens #Astrophysics #Philosopy

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  • NASA’s Hiring A “Planetary Protection Officer” To Shield Earth From Alien Contamination | CNBC

    1:14

    NASA is looking for someone to protect Earth from aliens — and the job pays a six-figure salary. Here’s everything you need to know about the position.
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    NASA’s Hiring A “Planetary Protection Officer” To Shield Earth From Alien Contamination | CNBC

  • What Would You Say to an Extraterrestrial? Douglas Vakoch at TEDxNashville

    18:47

    Douglas Vakoch is the Director of Interstellar Message Composition at the SETI Institute, as well as the only social scientist employed by a SETI (Search for Extraterrestrial Intelligence) organization. Dr. Vakoch researches ways that different civilizations might create messages that could be transmitted across interstellar space, allowing communication between humans and extraterrestrials even without face-to-face contact. He is particularly interested in how we might compose messages that would begin to express what it's like to be human. Dr. Vakoch leads the SETI Institute's project to compose interstellar messages of the kind that may some day be sent in reply to a signal from extraterrestrials. As a member of the International Institute of Space Law, he examines international policy issues related to sending such responses. He serves as Chair of both the International Academy of Astronautics (IAA) Study Group on Interstellar Message Construction and the IAA Study Group on Active SETI: Scientific, Technical, Societal, and Legal Dimensions.

    Dr. Vakoch has published widely in scholarly books and journals in psychology, anthropology, astronautics, and the relationship between the arts and sciences. He is the editor of several books, including Communication with Extraterrestrial Intelligence, Civilizations Beyond Earth: Extraterrestrial Life and Society, Psychology of Space Exploration: Contemporary Research in Historical Perspective, and Ecofeminism and Rhetoric: Critical Perspectives on Sex, Technology, and Discourse. His work has been featured in newspapers and magazines such as the New York Times, Nature, Science, and Der Spiegel. As a spokesman on the cultural aspects of SETI, he has been interviewed on radio and television shows on the BBC, NPR, ABC, The Learning Channel, The Discovery Channel, and many others.

    In addition to being a clinical psychologist (Ph.D., State University of New York at Stony Brook), Dr. Vakoch has formal training in comparative religion (B.A., Carleton College) and the history and philosophy of science (M.A., University of Notre Dame). His broad background gives him unique insights into the significance of SETI as a human enterprise in deeper self- understanding. In addition to his position at the SETI Institute, Dr. Vakoch is Professor of Clinical Psychology at the California Institute of Integral Studies.

    In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations).

  • Seth Shostak on SETI | Singularity University

    1:9:05

    Dr Seth Shostak explains the mission and outlook for SETI, a non-profit organization that looks for evidence of life beyond earth. This lecture was given at Singularity University, in NASA Ames, California, in August 2010.

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    Seth Shostak on SETI (Search for Extra Terrestrial Intelligence) | Singularity University

  • This Prometheus Theory Will Blow You Away | Fan Theory | In Theory

    2:25

    Are the engineers trying to kill us?

    In the film Prometheus, life on earth was created by a group of giant aliens, known as the engineers. However the engineers grew displeased with humans and created a version of the xenomorphs, aka the aliens, to destroy us. At one point archaeologist Elizabeth Shaw says “they created us. Then they tried to kill us. They changed their minds. I deserve to know why.” They why is simple. We failed them and killed those they sent to help guide us. The human species is a failed experiment that they want to end.

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  • Man of Steel Alien Invasion Caught on Tape ! ! !

    2:32

    Something crazy happened at MOVIECLIPS while we were doing a trailer review. Everything went haywire as an alien ship was spotted over Los Angeles. We hope everyone is safe, Jimmy is in the hospital now but only has a fractured femur. Please leave comments to what destruction happened in your neighborhood. Alien ships have been spotted all over the United States.

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  • Alien vs Starship, SpaceX Starship Updates, DART Mission, Russias Prichal & JWST incident

    20:23

    Sign up for Curiosity Stream at

    Wow has this been a busy week for the space industry. We have Alien vs Starship (ground support updates), overall SpaceX Starship Updates, DART Mission, Russia's Prichal &and the JWST incident. We’ll kick off initially with updates at Starbase with Starship development. There is a lot to talk about with the launch tower and launch table systems. We had the beautiful DART mission launch by SpaceX on a Falcon 9 mid week. Russia's Prichal Module launch adding a fresh new extension to the International Space Station, and a bit of a scare for the James Webb Space Telescope. Strap in... this one is packed!

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  • Jill Tarter - What would Intelligent Aliens Mean?

    12:08

    Free access to Closer to Truth's library of 5,000 videos:

    Do intelligent aliens exist? Who knows? But here's what we do know: the potential existence of intelligent aliens probes meaning and purpose in the universe. What would it mean if the universe were teeming with life? What would it mean if we humans were alone?

    Watch more interviews with Jill Tarter:

    Jill Tarter is the former Director of the Center for SETI Research at the SETI Institute. She earned her Bachelor of Engineering Physics Degree with Distinction from Cornell University and a MS and a PhD in Astronomy from the University of California, Berkeley.

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    #WomenInSTEM #SETI

  • Finding alien life: Christoph Adami at TEDxUIUC

    19:51

    Chris Adami talks about how to find life... that is not like ours.

    Christoph Adami is Professor of Applied Life Sciences at the Keck Graduate Institute in Claremont, CA, and a Visiting Professor at the BEACON Center for the Study of Evolution in Action at Michigan State University. He obtained his PhD in theoretical physics from the State University of New York at Stony Brook. His main research focus is Darwinian evolution, which he studies at different levels of organization (from simple molecules to brains). He has pioneered theapplication of methods from information theory to the study of evolution, and designed the Avida system that launched the use of digital life as a tool for investigating basic questions in evolutionary biology. He wrote the textbook Introduction to Artificial Life (Springer, 1998) and is the recipient of NASA's Exceptional Achievement Medal.


    This talk was recorded at TEDxUIUC 2011 (02/19/11), which was organized at the University of Illinois at Urbana-Champaign by a group of students led by Cristian Mitreanu.


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  • Life Beyond Earth, Part 3: Natalie Batalha | Nat Geo Live

    19:27

    Dr. Natalie Batalha, a Kepler Mission scientist, is using technology that is out of this world—and out of this solar system—to locate exoplanets, some of which could be Earth-like planets that may be hosts to extraterrestrial life.
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  • Will We Ever Find Intelligent Alien Life?

    4:50

    What can an equation tell us about whether or not we're alone in the universe?

    Host: Reid Reimers

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  • The Fermi Paradox — Where Are All The Aliens?

    6:21

    The universe is unbelievably big – trillions of stars and even more planets. Soo… there just has to be life out there, right? But where is it? Why don’t we see any aliens? Where are they? And more importantly, what does this tell us about our own fate in this gigantic and scary universe?


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  • Intelligent Life Beyond Earth

    55:43

    Christopher D. Impey, University Distinguished Professor, Astronomy
    One question rises above all others when it comes to our place in a vast and ancient Universe, 'Are we alone?' With a billion habitable locations in the Milky Way galaxy, and more than ten billion years for biological experiments to play out, a search for intelligent life beyond Earth is well-motivated. Unfortunately, the single example of life on Earth gives no clear indication of whether intelligence is an inevitable or an extremely rare consequence of biological evolution. The search for extraterrestrial intelligence, or SETI, is more appropriately called the search for extraterrestrial technology. So far, the search for intelligent aliens by their electromagnetic communication has met with half a century of stony silence. It's challenging to define life, and even more difficult to make general definitions of intelligence and technology. We'll look at the premises and assumptions involved in the search, the strategies used, and the profound consequences of making contact.

  • Why are humans so different from other animals?

    6:39

    Why do humans drive cars and not chimpanzees? What explanations can be found in our prehistory? Magnus Enquist, Stockholm University, investigates what happened when the human and chimpanzee development line parted about 5.5 million years ago. One explanation is the human ability to do things in several steps and the ability to transfer accumulated knowledge from generation to generation. The long childhood and culture of humans are other reasons. To play and learn for a long time favors knowledge development.

  • Do aliens exist? Carl Sagan & Frank Drake on Intelligent Life in the Universe

    1:37

    Stunning visuals of space and our world over retro audio of Frank Drake and our founder Carl Sagan contemplating the search for intelligent life beyond our planet.

    Video by
    NASA / ESRSU / Seán Doran
    Ryan Chylinski
    Josh Spradling
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    Music by
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    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.

  • Astronomer Jill Tarter Answers Alien Questions From Twitter | Tech Support | WIRED

    13:22

    Astronomer Jill Tarter, former director of the Center for SETI Research, uses the power of Twitter to answer common questions about extraterrestrial life. What if SETI found intelligent life on another planet? Would they keep it a secret? Did US fighter pilots really see a UFO?

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    Astronomer Jill Tarter Answers Alien Questions From Twitter | Tech Support | WIRED

  • The Probability of Life on other Planets | Jon-Jacob van Oosterwijk Bruyn | TEDxRundleAcademy

    5:44

    In The Probability of Life on other Planets, Jon-Jacob van Oosterwijk Bruyn capably and succinctly outlines the scientific possibilities for life on other planets in a quick-paced, engaging talk.

    Jon-Jacob loves the idea that there could be alien life somewhere out there in the universe and with precision and confidence, he outlines all of the reasons why life on other planets is a possibility.

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

  • What would intelligent aliens look like? How Extraterrestrials may evolve

    18:02

    Get MagellanTV here: and get an exclusive offer for our viewers: an extended, month-long trial, FREE. MagellanTV has the largest and best collection of Science content anywhere, including Space, Physics, Technology, Nature, Mind and Body, and a growing collection of 4K. This new streaming service has 3000 great documentaries. Check out our personal recommendation and MagellanTV’s exclusive playlists:

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    What would aliens actually look like? Realistic extraterrestrials. Alien life is probably common in the universe. But by alien life, I mean life like bacteria other one-celled creatures. Complex intelligent life like mammals is probably exceptionally rare.

    But whenever you see alien creatures in the movies, they look like humans humans. This would be nearly impossible. This is a reason to be highly suspect of any alien visitations.

    The raw ingredients available to all planets are the most common elements in the universe:
    Hydrogen, helium, oxygen, Neon, nitrogen, carbon, silicon. Our solar system is made of the same elements. But the key element to life is Carbon. Carbon is the backbone of every known biological molecule. Carbon can form 4 bonds with other atoms simultaneously. This makes it well suited for long chains of molecules that serve life, such as DNA.

    Why can’t alien life be based on silicon? The complexity required for organic chemistry with silicon is not there.

    All life uses Liquid water as a solvent, and Adenosine Triphosphate (ATP) to store and release energy. Water is the most abundant compound in the universe. It's a good bet tthat intelligent alien creatures on other planets are also based on water.

    There is a critical distance from a star where a planet is not so hot such as mercury, but also not too far like Jupiter where it is so cold that water freezes. Earth happens to be at this ideal zone. So let’s look at what intelligent life that evolves on an earth size planet in the habitable zone of sun-like star, based on carbon chemistry and water would be like.

    There is one thing that is nearly certain: an alien life form will be symmetrical. Intelligent life would need to be able to build tools. This would require limbs or digits of some sort to hold and manipulate objects. They would require some way of recognizing their environment – sensory mechanisms - the analogs of eyes, ears, noses.

    Eyes seem to have evolved a few times separately on earth, so something like eyes may be a universal trait. But alien eyes would have evolved for the peak electromagnetic spectrum of their own star.

    it appears crucial for a species to cooperate and communicate in some kind of language. So they'd need to do this somehow, not necessarily by sound, like us with our mouths and ears. They could use other methods.

    Do they live in a sea, In the clouds, or on land? There is no complex life that lives permanently in the atmosphere. And most intelligent species on earth happen to be on land, instead of the sea. According to physics professor Bernard Bates at the University of Puget Sound, Aliens with advanced technology would have to be on land because technology needs fire to kick-start it.

    Regarding oceans, there is very little light beyond 200 meters in the ocean. So the energy that ocean creatures have to work with is less than the energy available on land. This makes it hard for larger complex creatures to evolve.

    If aliens live on land, they would also need some means of locomotion – mammal legs and insect legs evolved separately, so aliens would likely have legs of some sort. Predators on earth mostly appear to have legs for fast running. So the legs would likely be segmented like ours for more efficient running. Whether it is two or 4 or more is hard to say. Natural selection on their planet would probably weed out inefficient body plans.

    Dr Yael Kisel, scientist at NASA’s Ames Research Center believes that most life in the universe as a whole is likely to be microbial. It is not clear whether intelligence is an evolutionary imperative. It is possible that the energy required to maintain a large brain is not evolutionarily advantageous vs. having larger teeth or higher speed.
    #aliens
    #extraterrestrials
    #arvinash

    But given the vast number of planets in the universe, it seems that even if our intelligence is an accident, we should still have company - intelligent neighbors somewhere, but they are likely to be so far away, that we may never encounter them.

  • What does an alien look like? | Louisa Preston

    4:25

    Astrobiologist and TED Fellow Louisa Preston works on Earth, studying some of the most alien-looking creatures and microbes -- but she hopes to find life on Mars someday. In this curiosity-provoking talk, she compares landscapes on Mars that resemble places on Earth that host all sorts of different life forms. Why not on Mars too?
    TEDArchive presents previously unpublished talks from TED conferences.
    Enjoy this unedited talk by Louisa Preston.
    Filmed at TED2013 Fellows.
    NOTE: Comments are disabled on this video. We made this difficult decision for the TED Archive because we believe that a well-moderated conversation allows for better commentary from more people and more viewpoints. Studies show that aggressive and hateful comments silence other commenters and drive them away; unfortunately, YouTube's comment moderation tools are simply not up to the task of allowing us to monitor comments on so many videos at once. (We'd love to see this change, YouTube.) So for now, if you'd like to comment on this talk, please use Facebook, Twitter or G+ to discuss with your networks.

  • Would Intelligent Aliens Undermine God? | Episode 407 | Closer To Truth

    26:47

    Whether extra-terrestrial intelligences exist has profound implications for human religion. We are either alone or not alone in the universe, but no matter the ultimate answer, theists and atheists will each mold that answer, alone or not alone, to fit their opposing worldviews. Featuring interviews with Steven Dick, Russell Stannard, Paul Davies, Robin Collins, and Douglas Vakoch.

    Season 4, Episode 7 - #CloserToTruth

    ▶Register for free at CTT.com for subscriber-only exclusives:

    Closer To Truth host Robert Lawrence Kuhn takes viewers on an intriguing global journey into cutting-edge labs, magnificent libraries, hidden gardens, and revered sanctuaries in order to discover state-of-the-art ideas and make them real and relevant.

    ▶Free access to Closer to Truth's library of 5,000 videos:

    Closer to Truth presents the world’s greatest thinkers exploring humanity’s deepest questions. Discover fundamental issues of existence. Engage new and diverse ways of thinking. Appreciate intense debates. Share your own opinions. Seek your own answers.

    #Religion #Aliens

  • The Big Idea: Intelligent Alien Life

    4:17

    Practically since humankind could look up at the sky, the question has been asked: Do we have company up there, in the cosmos?

    I'm quite sure we're not the only intelligent species in the universe, said Dr. Seth Shostak.

    We'll let Dr. Shostak finish that thought in a minute.

    For the last 25 years, he and his team at the SETI Institute have been eavesdropping on space with their massive antennas in California. Listening for signs intelligent life exists or has existed.

    I find it hard to believe it hasn't, doesn't or won't, said Dr. Rebecca Oppenheimer.

    Dr. Oppenheimer, chairwoman of astrophysics at the American Museum of Natural History in New York, and her team have been looking at images of planets for the same. Both Oppenheimer and Shostak agree, life must exist beyond earth. In its simple form, it could be as close as Mars or Europa, Jupiter's icy moon.

    I have this dream we'll send a probe, drill the ice and find a fish looking back, said Oppenheimer.

    In the past decade alone, major breakthroughs in what we know about space have come through missions like the Kepler telescope. Discovering countless planets in our galaxy so dense that, anywhere we see a star, there are likely planets revolving around it. Just like our solar system.

    The Milky Way galaxy in which we live has a couple hundred billion stars. 1 in 5 of them might just have planets with liquid oceans and conditions in which life could occur.

    The probabilityof planets capable of fostering life shot up dramatically with Kepler's discovery, for instance, finding 452B, also being called earth 2.0.

    It's technically a bit larger than earth, but it does have a similar temperature and it orbits the star similar to ours, said Dr. Nicole Cole, research scientist on the Kepler and Kepler 2 missions.

    When we talk about life in outer space, it's easy to feel a dreamer, but here's something for the realists in us. Scientists tell us life gets started very easily. You just need basic elements like water and oxygen and nature takes it's course.

    That's what happened on earth, and rather immediately, according to scientists.

    If you look at the history of this planet the moment life could be here, it was.

    Would it just be a matter of time before single cell organisms mesh together and start evolving into more complex life forms? Oppenheimer's fish, for instance. Even if there's a 1 percent chance, given the numbers, you see why experts believe intelligent life exists out there.

    So why we haven't had contact yet? Maybe it's because we've just started looking. Shostak has been at it for 25 years but in a timeline of earth, 4.5 billion years, we're starting kinda late.

    Not to mention we'd be counting on life on another planet to have developed the tools, at exactly the same time, to look for us and they may even be too smart for us.

    If there had been other civilizations even nearby, they may have gone thru another stage of evolution where they see us as greasy bacteria.

    Many astronomers believe the answers aren't light years away.

    This is the first generation with the scientific knowledge and tech to find something either we find it or you get a cup of coffee from me.

    And since I don't drink coffee, all those scientists had better get back to work.

    --ARTHUR CHI'EN

    For more information, visit SETI. org and UniverseToday.com.

  • The Vaticans Take on Aliens?

    2:19

    SelectPlusThe Vatican's Take on Aliens?The Vatican's Take on Aliens?The Associated PressAccording to the Vatican's chief astronomer, believing that the universe may contain alien life does not contradict a faith in God. (June 8)he Gandolfo Castle perched above a glistening green lake near Rome has a magical aura. It is the Pope's summer residence, and it is here that Vatican astronomers have for decades studied the heavans.Perched on the roof of this 17th century castle are two domes holding telescopes that Vatican astronomers have been using since the 1930s.Now they have much more powerful telescopes for their research located in Tucson, Arizona, but it is here at Castel Gandolfo that the astronomers have their headquarters. One would almost expect to find the wizard Gandalf from the Lord of the Rings striding through the long hallways in his dark robes, with his wooden staff and flowing beard. But, instead, inside the walls of this Castle an unassuming Jesuit from Argentina leads the Vatican Astronomical research and has recently caused an uproar by opening a debate about aliens.SOUNDBITE FATHER JOSE GABRIEL FUNES, CHIEF VATICAN ASTRONOMER, IN ENGLISH In a universe so big, huge I would say, as the one where we live with 100 billion of galaxies, each galaxy with a hundred billion stars probably with many of these stars having planets, it could be possible that life could evolve as they way we know on earth. Father Funes says he is not sure if other forms of life would be more or less intelligent than humans, but he is convinced that the existence of Aliens is not a contradiction with the Catholic faith.There has been no word from top vatican officials about Funes' comments, but some people on the street find them odd. Richard Charnock was taking a group from the All Hallows Catholic High School on a trip to Italy when he heard about the comments from the Vatican astronomerSOUNDBITE RICHARD CHARNOCK, COORDINATOR RELIGIOUS EDUCATION, ALL HALLOWS CATHOLIC HIGHSCHOOL, in EnglishI think it is preposterous that they are saying that--there is one human that god created --. We can go back to the bible. He didn't create Adam, eve and ET did he, it was Adam and Eve. It goes against what we believe as Christians. STAND-UPWe probably won't be seeing aliens attending mass any time soon, but the Vatican's chief astronomer says that they could be other forms of life outside earth and if they are out there, he says they are God's Creatures.Tt, Castel Gandolfo, Italy

  • Life under the water: there is somebody intelligent there below | Jim Toomey | TEDxCannes

    8:28

    In the world of cartoons, animals walk and talk and act like humans. Jim Toomey provides a cartoonist’s perspective on animal intelligence and how in many ways it might be superior to our own. In particular, he talks about the ocean animals he features in his comic strip and what makes them interesting to him as a storyteller and artist.
    //
    Dans le monde des dessins animés, les animaux marchent, s’expriment et agissent comme des humains. Jim Toomey nous offre une perspective sur l'intelligence animale : il nous montre comment, à bien des égards, cette intelligence pourrait être supérieure à la nôtre. Particulièrement, il nous parle des animaux marins qu'il représente dans sa bande dessinée et de ce qui les rend intéressants pour lui, en tant que conteur et artiste.

    Jim Toomey is a award-winning cartoonist and film maker who draws the popular comic strip Sherman’s Lagoon, which appears daily in over 200 newspapers, in 20 countries and six languages. The strip’s underwater theme explores environmental and social issues in a way that appeals to adults and children alike. He has given talks at a variety of venues, from his April 2010 TED Talk, to the Royal Society in London, to Harvard University.
    //
    Jim Toomey est un réalisateur de dessins animés primé et un cinéaste auteur de la bande dessinée populaire la Lagune de Sherman, qui apparaît quotidiennement dans plus de 200 journaux, dans 20 pays et en six langues. Le thème sous-marin de la bande dessinée explore les questions sociales et environnementales d’une façon qui séduit à la fois les adultes et les enfants. Jim a donné plusieurs « talks » dans une variété de lieux, à TED en 2010, à la Société Royale à Londres, à l'Université de Harvard…

    This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at

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