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Sep 10, 2021 · Do aliens exist? Extraterrestrial life has never been discovered, but that doesn’t mean it doesn’t exist. At NASA, astrobiologists like Lindsay Hays are trying to answer one of the most profound questions ever: Is there life beyond Earth?
Sep 8, 2021 · NASA. 12M subscribers. Subscribed. 16K. 649K views 2 years ago. Do aliens exist? Extraterrestrial life has never been discovered. However, that doesn’t mean it doesn’t exist. And at NASA,...
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Sep 14, 2023 · Sep 14, 2023, 12:10 PM PDT. A time-lapse of the Milky Way Galaxy as seen from the International Space Station. NASA/Kjell Lindgren. UFOs (or UAPs) probably aren't aliens, NASA says. Rumors of...
- Jonti Horner, Astrobiologist
- Steven Tingay, Astrophysicist
- Helen Maynard-Casely, Planetary Scientist
- Rebecca Allen, Space Technology Expert
- Martin Van-Kranendonk, Astrobiologist
I think that has to be a definite yes. But I think the real question is, are aliens close enough for us to discover them? Space is unbelievably big. In the last few decades, we've learned almost every star in the cosmos has planets. Our galaxy, the Milky Way, is estimated to have up to 400 billion stars. If each of those has five planets, we'd have...
Yes, but that's a bold assertion. So, let's be clear what we are talking about. I consider the term "alien" to reference all manner of life, as we understand it on Earth, resident in places other than on Earth. Having said that, there is currently no detailed consensus on the definition of "life". It is a very complex concept. But if we found somet...
I'm of the opinion that it's only a matter of time before we find something that resembles biology somewhere other than on Earth. This is because we're increasingly finding various potential pockets in our solar system that may be hospitable to life as we know it. For instance, consider the under-ice oceans of Europa and Ganymede (two of Jupiter's ...
Yes, but they probably don't look like us. There are more than 100 billion planets estimated to exist in our galaxy alone (with some six billion potentially being Earth-like). Therefore, the probability that life exists elsewhere is all but confirmed. When we hear the word "alien", however, an image of a humanoid lifeform usually springs to mind. B...
A simple answer to this question is no. If we use purely empirical data and assume the question refers to any type of life outside of Earth that is not related to human activity, then the answer – as far as we know – must be no. But, of course, our knowledge relating to this question is finite; we have not investigated every corner of the Universe ...
Jun 13, 2021 · Four out of five experts said aliens do exist. Here are their detailed responses: Read more: The US military has officially published three UFO videos. Why doesn't anybody seem to care ...
4 days ago · 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?
Oct 12, 2023 · Nobody can confidently explain the cause of these shenanigans, but various hypotheses have been suggested, including the shattered remnants of a planet, swarms of comets, and, yes, an alien ...
