Do Aliens Exist? We Asked a NASA Scientist

Do aliens exist? Extraterrestrial life has never been discovered. However, that doesn’t mean it doesn’t exist. And at NASA, astrobiologists like Dr. Lindsay Hays are trying to answer one of the most profound questions ever: Is there life beyond Earth? Explore more: https://astrobiology.nasa.gov/

Producer: Scott Bednar
Producer/Editor: Jessica Wilde

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Comment (1,783)

  1. SEE NERDS, Aliens don't exist!
    We are made from star dust, very specific space conditions and time. Everything here on Earth was just VERY lucky.

    If anything else even exists out there, it's probably just microbial life.

  2. There must be other life forms. They might just have better transportation methods, making it easier to move in the universe. Maybe they use ships that have pure energy like stars as a fuel source (Science). Where the exterior of their ship consists of 2 dimensions and 3 dimensions in one object, who knows why? Where the fuel could like small tiny little stars that collide pushing it forward. Maybe its possible? Though i do think aliens exist

  3. ALIEN IS TRUE AND THE AGE OF THAT LIFE ARE BILLION OF YEARS,, ALIEN ARE THE FIRST LIFE MADE OF GOD WITH HIGH INTILLIGENT OR LOW INTILLIGENT THAN THE GOD USING AS HER ASSISTANT OR DESIGNER OF MANY TYPE LIFE IN EVERY PLANET IN WHOLE UNIVERSE, ALL THIS ARE ARE 144,000 KIND WITH DIFFERENT INTILLIGENT AND DESIGN LIVING IN EVERY GALAXY EVERY ALIEN HAVE OWN POPULATION OR HAVE OWN LIFE MADE AS HER POPULATION INCLUDING THE HUMAN,, THE JOB OF THE ALIEN ARE TO FULL A DIFFERENT TYPE OF LIFE IN EVERY PLANET AS A WORKER OF THE PLANET OR PROTECTOR OF THE PLANET

  4. It only seem logical to assume that there's a high probability of the existence of intelligent life throughout the universe. With the innumerable variety of life forms which exist on this tiny speck of dust particle called earth; in comparison with the almost limitless amount of galaxies and planets in the universe. The question is why haven't they then contacted us? Maybe they have, but we just may not have noticed. Maybe our assumptions about how that contact would manifest itself was not what we would have expected. Maybe we were expecting spacecrafts, and alien looking beings. Perhaps all of our assumptions are/ were wrong.

  5. An infinite universe. Infinite possibilities. I think there is aliens. But, the same way we don’t show ants there are more to life than what they think, the same way would aliens (if they’re way more intelligent than us) not have any interest in proving anything to us.

  6. It is pitty people think that only world is whole universe ✨ they don't believe another world. Logically it is possible. May be world people has fear to accept aliens that's why they deny the truths.

  7. There is thousands of witnesses and proof that we are not alone, and the reason it don't make it to mainstream media is because of the same reason that is still at hand, which is the government and science Community feels we are still not ready and we all know that is not true for everyone on the planet. One of the main reasons is because of greed because if this technology comes into Society of today it will change everything we ever known about our civilization. Time travel, Teleportation, no need for a doctor because the answer to every disease will be at hand, free energy, no poverty which equal to no crime which equals to no need for a police. Earth would be like that Utopia that we still think is a fairytale. Because of greed everything the superior races have given the Earth was used for power and War, because the powers to be do not care about Humanity, they only care about Total Domination of the human species and keep them under Social, Financial, economical, mentally control. A prison for mind body and spirit, to only do the will of man and not God.

  8. Aliens are not real, Satan tricks of seeing aliens and UFOs thinking they are real . All the videos on Area 21 finding aliens and keeping their dead / alive bodies are scams and false advertising.

  9. I think there’s other intelligent life out there, but we’re the aliens. Do you really think another planet has exceeded our technology? That’s ridiculous. Maybe we thought of the alien theory because we’re the closest to achieving it.

  10. They most certainly do. NASA has the photos and the Data. This video is misinformation. NASA and the Air force are already in communication with the Elevated Sentient beings.

  11. The most that you will find out there is organisms or some animals you won't find any intelligent beings out there Its just a matter of faith. Humans are created by God to be the highest creation even if you find some intelligent life out there they won't be as intelligent as humans or as technologically advanced as humans. Most of us are just inspired from movies in which they show aliens possessing unworldly intelligence and technology

  12. I want to tell that we can't believe in aliens because we think that life is not possible on other planets
    But reality is that life is not possible on other planets like our life means oxygen requirements and etc ……..
    But why we think that aliens also need things like us like oxygen, water ,food etc
    May be they are present and unique from us and also their requirements are unique

  13. Aliens races saucer spacecrafts have been visiting and observing primitive earth mankind for thousands of years since mankind lived in caves!
    Nasa is still very primitive with very limited intelligence!!
    Theirs two trillion galaxies in this universe with 200 billion star systems in each of these galaxies with One Million advanced aliens races civilizations in universe ✨️

  14. Why do we need 👽🛸Nasa's stamp of approval for life to exsist in other galaxies, planets etc? So many people across planet Earth have already had ET contact/encounters. Why are they not being believed? Area 51 is just one of many sites across the planet where alien life forms have been kept for observational and informational purposes.
    Reverse engineering of recovered ufo tech has also occured! People need to WAKE TF UP! Investigate for yourselves! There is life within our own Solar System! Disclosure has already happened!

  15. Arrogance, is the only reason a person questions U.F.O.'s, &/or

    life on other planets.

    Of course there is life on other planets, Earth isn't "all that".

    And because of the fact that we exist, that's more than enough proof,

  16. To sum up the answer to yall people who don't wanna waste a minute of their time then this is pretty much your answer,

    "yes, but we did not find them yet"

  17. She so has been on planet nine since 2017.. get up to date girl..its now a world wide phenomenon. You can’t bury your head in the sand forever.

  18. The sad thing about being a organic sentient being is that ,we do NOT even know if ours is the only universe, because increasing evidence is that we are in a multiverse system.If thats true its impossible to comprehend the scale of SENTIENT beings out there…

  19. Universe is just unimaginably big. Aliens might also be searching for us just like us searching for them. I do believe there are more lives on different planet than just Earth.

  20. Whether there is aliens in other planet right at this moment has to be an extreme accident to know. Remember Earth was also life less for millions of years before it was finally seeded with life. Similar planetary evolution is experienced by every planet except gas giants. Hence something life less today may become full of life tomorrow. But a similar civilization like ours at the same epoch of our own is extremely unlikely to come across.

  21. I feel like she’s avoiding the question and not being truthful enough with us (I mean it’s obviously not her fault, probably she’s sworn to secrecy). I don’t think NASA really wants us to know about extra terrestrial life on other planets just yet. But I guess we’re ready to know the truth 🤷‍♀️.

  22. One thing I've noticed with these UFO/ aliens/ ET -themed videos, the ending is always "We don't know/ we're not sure/ who knows?" Long story short: wasted time watching alien-themed videos

  23. Two important facts we have no correct answers: Do aliens life exist other solar systems in Miky Way galaxy and how many stars are there in Miky Way galaxy? I hope someone has the correct answers and wins the Nobel Prize.

  24. Am I the only only that thinks we are alone, absolutely no evidence, plus so many things happened for life to take off here, I.e Jupiter's travelling in and then out for one, if there is life its simple marine life and would be magnificent news.

  25. Nasa do you even gatta ask us im sure people like me who believe aliens are are right because aliens are real in fact if moon had it own people and a human went there they would call that human an alien because he does not belong there same goes for a person born on the mmoon when they come to earth somr people will call that person an alien

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