A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

Harvard astrophysicist Avi Loeb, known for his controversial extraterrestrial theories, is now leading a new Trump ...

One pilot's offhand description in 1947 started a national obsession that never quit.

A triangular UFO photographed over Emiliano Zapata in central Mexico has prompted multiple witness reports across nearby ...