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

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

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

For the first time, NASA's TESS (Transiting Exoplanet Survey Satellite) mission has identified a planet orbiting a distant star thanks to its warping of space-time. Unlike the star-hugging transiting ...