With the release of Disclosure Day, Steven Spielberg’s new film about aliens, a question as old as science fiction itself ...

And if aliens made of different stuff potentially possess consciousness, then why not minds made of silicon, metal, and ...

A rare Sahara Desert meteorite revealed a lost Mars-sized planet from the solar system's first million years. The post ...

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 ...