From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

For generations, humans have imagined what it would be like to discover life beyond Earth. Would alien beings look anything ...

The buzz started in a hay meadow at the foot of a mysterious-looking geological formation. Helicopters and trailers arrived in large numbers, famous faces and a distinguished director settled in near ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...