The European-led LIFE mission aims to use spacecraft in formation to look for biosignatures.

The scientist has outlined the 'potentially devastating and irreversible long-term impacts' of unknown organisms in space ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Alien life beyond Earth: After sorting through more than 6,000 known exoplanets, astronomers have picked out 45 rocky worlds that look like the best places to hunt for signs of alien life. It’s a big ...

"Decades of research on invasive species have demonstrated how an organism introduced to the wrong place at the wrong time can spread uncontrollably with potentially devastating and irreversible ...