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 ...

NASA’s Perseverance rover has uncovered the most extensive evidence yet of complex organic molecules on Mars, detecting ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

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 ...

An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...