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

Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” – Arthur C.

Avi Loeb’s White House panel has asked the Pentagon for videos and files on unexplained aerial sightings ...

In 1947, pilot Kenneth Arnold's report of strange objects over Mount Rainier and a fateful media misquote created the 'flying ...

In June 1947, Kenneth Arnold saw something strange in the sky. What he saw sparked a national UFO craze-but it was far from ...

I do think Elon Musk has been briefed into the program,” Coulthart said, referring to alleged Pentagon UFO retrieval programs ...

Astrobiologists think extraterrestrial civilisations grow so much that they hit crisis points, missing the chance to set out ...

For decades, the question of whether life exists beyond Earth has been the domain of science fiction writers and late-night ...

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

In his article, he wrote that witnesses said the ship was traveling north and very close to the ground. It was moving slow, ...

NASA on Friday cut two astronauts from the next crew to make room on the return trip for the two stuck at the International ...