This eBay listing for never produced, alleged "Planet of the Apes" action figures is a puzzling mystery for toy collectors.

An image taken by Curiosity last month has sparked claims of a long-lost civilization on the Red Planet after some spotted a ...

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

Astronomers discovered a planet 25 light-years away that orbits within the habitable zone of its star that could potentially ...