The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist ...

The Pentagon has released another batch of ‘UFO Files’ with footage of unknown objects in the sky—here are the most common alien theories, explained. This voice experience is generated by AI. Learn ...

NASA's hunt for alien life may be undermined by its own instruments, according to a group of leading astrobiologists who warn that current tools and mission designs are likely missing subtle, but ...

An ocean world that's teeming with microbes — and who knows what other kinds of life — is currently the best explanation for some chemical signatures that the James Webb Space Telescope has spotted in ...

The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to ...

The story of comet 67P/Churyumov-Gerasimenko and the European Space Agency's Philae spacecraft just got a whole hell of a lot more interesting. After a semi-botched landing resulting in the spacecraft ...