In Prove You're Human, you're hired by a corporation working on artificial general intelligence, because they have a problem.

The unexplained registration of Alien.gov by the US government is fueling fresh UFO disclosure speculation, and even sparking bets on when “alien confirmation” could happen. A week after the US ...

Free-floating planets could host moons with tidal heating and thick, hydrogen-rich atmospheres that may be able to create billions of years of potentially habitable surface conditions.

A ring camera from a Southern California home captured an alien-like figure walking across a yard. NBC News' Camila Bernal spoke to some experts on whether they feel ...