The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

Scientists propose that a moon base could act as an isolated first line of biological defense against extraterrestrial ...

The rock, Clinton said, “speaks to us across … billions of years and millions of miles. It speaks of the possibility of life.

Suppose there are signs of extraterrestrial life and we have not yet been able to detect them. What does that mean? In Nature Astronomy, researchers discuss the consequences of these so-called ...

Scientists have searched one of the only known visitors to us from another solar system for signs of alien technology – and ...

Fictional and nonfictional takes on extraterrestrial life. Steven Rowley’s new novel Take Me With You is about a man whose ...

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

The Trump administration on Friday released much-anticipated UFO files with images showing evidence of what could be extraterrestrial life. THIS BLOG IS NOW CLOSED Article continues below ...

UFO researchers say upcoming US defence files on unexplained phenomena could reveal proof of alien life within weeks, potentially supporting claims extraterrestrials are already on Earth, even as ...

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