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- We have not yet discovered life on any other planet, and we have not seen any scientifically supported evidence for extraterrestrial life.
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Sep 10, 2021 · Watch on. Do aliens exist? This is a really interesting question and one that NASA has been trying to understand, explore, and figure out for a long time. We have not yet discovered life on any other planet, and we have not seen any scientifically supported evidence for extraterrestrial life.
- 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 ...
Oct 31, 2023 · Opinion: Science could finally discover aliens. What does that mean? A galaxy cluster captured by the James Webb Space Telescope, which can help scientists peer into the atmosphere of far-off...
- Adam Frank
Nov 2, 2021 · Jorge Saenz/AP. Is there life on other planets? It's a simple question without a simple answer. "The expectation, in particular with the public, is a yes-or-no answer. Did you find it or didn't...
- Joe Hernandez
Dec 26, 2022 · From UFOs to amazing alien world discoveries with the James Webb Space Telescope, here are 10 things we learned in the search for extraterrestrial life in 2022.
Jun 23, 2021 · Scientists identify 29 planets where aliens could observe Earth. Astronomers estimate 29 habitable planets are positioned to see Earth transit and intercept human broadcasts. Ian Sample...
