To support alien life, a planet doesn’t have to be exactly like Earth, but it does need a few key ingredients. First, it should orbit its star at the right distance, where temperatures allow liquid ...

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...

They’ve obscured alien worlds from us for years, but clouds could turn out to be where the first hints of extraterrestrial ...

One of the most fantastical claims SpaceX is making during the countdown to its IPO is that it is helping create one of the ...

This could be why we still haven’t found alien life - Traces left behind by organisms on alien worlds may be too subtle to detect ...

Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature ...

Astrobiologists warn that NASA's current instruments may miss subtle signs of alien life, risking 'false negatives' in the ...

Astronomers estimate there are 10 billion Earth-like planets in the Milky Way, increasing the statistical likelihood of ...

Across the punk underground to jazz academia, we take a look at five artists who adopted alien alter-egos as part of their ...

Mercury may have gotten much of its polar ice within a single Mercurian day following a massive asteroid impact, a new study ...

Does the CIA have its own Men in Black? Apparently, the government isn’t disclosing everything they know about UFOs. A ...

Astrobiologists are raising concerns that humanity’s search for alien life may be limited by the very tools designed to find it.