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

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

The Trump administration has tapped a Harvard professor with controversial theories about aliens to lead a team of scientists ...

A Catholic nun believes humanity is on the verge of a supernatural battle.

“Mr. Chair, the truth is out there.” That’s what Rep. Nate Davidson, D-Cumberland and Dauphin said during a Tuesday Pa. House ...

"Project Hail Mary" really pushes the limit when it comes to non-humanoid aliens. But researchers posit that real aliens ...