Project Hail Mary sees Ryan Gosling's astronaut on a last ditch mission to save Earth - and then an alien shows up.

SETI has spent decades listening for a sharp, well-defined radio signal that could indicate it was sent by distant intelligent life. Now researchers believe that space weather could distort and blur s ...

Stellar plasma can smear alien radio signals before they escape their star system, making them harder for astronomers to detect.

Roughly 425 million years ago, in the warm seas over what is now southern China, there lived a meter-long bony fish with jaws ...