Between biosignatures and technosignatures lie noosignatures, and some scientists think they could help us find alien life ...

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 ...

Pulverised technology from collapsed alien civilisations may lie scattered across the solar system, including on the Moon, a new study suggests. The likelihood of advanced aliens living at the same ...

For generations, the search for life beyond Earth has focused on avoiding one of science's biggest mistakes: claiming a discovery that turns out not to be real. Researchers have built entire ...

The Manhattan-size interstellar object 3I/ATLAS exhibited signs of non-gravitational acceleration and appeared “bluer than the sun” as it passed our local star — which could be signs of an alien craft ...

The alien mothership makes contact with Earth in this scene from ‘Close Encounters of the Third Kind.’ Columbia Pictures Amy Adams attempts to communicate with a cephalopod-like, seven-limbed alien ...