Scientists have been searching for evidence of extraterrestrial life for decades. So, where are all the aliens? Here are 12 ...

Scientists have identified Acidalia Planitia on Mars as a potential hotspot for alien life, with conditions ideal for ...

Was alien life in "hot water" on Mars billions of years ago? New evidence from the Martian meteorite "Black Beauty" suggests ...

Bad news, folks: those samples from the asteroid Ryugu appear to have been contaminated by life here on Earth.

A recent discovery made by scientists working with a sample of rock from outer space highlights one of the huge challenges ...

Thousands of cattle have been killed and carefully harvested for their sex organs for at least half a century, leaving no ...

The discovery could further indicate that the Red Planet, despite its arid and desolate appearance today, may have been capable of supporting life long ago. The evidence was delivered to Earth and ...

underscoring just how hard it is to probe off-Earth samples for evidence of extraterrestrial life. "The presence of terrestrial microorganism within a sample of Ryugu underlines that ...