Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

This article was originally published Oct. 21, 2021. It has been updated for spelling as well as the addition of this 1990 On The Record interview: LAS VEGAS (KLAS) – The atomic age officially began ...

For your extraterrestrial viewing needs, Stacker ranked the top 30 alien movies, according to their IMDb user rating.

Sam Rockwell’s acclaimed sci-fi movie by Duncan Jones, Moon, is now streaming free this July. Here's where to watch it.

Donna Hare's decades-old claim that NASA airbrushed UFOs from photos resurfaces, sparking renewed interest and debate despite ...

A NASA whistleblower claimed that the space agency knowingly covered up proof of alien life captured in everyday photos.

Once, a man called the authorities about an "enormous light" that was "blazing" above his house—only to call back shortly to explain it was actually the Moon.

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

On a clear night, the sky may seem peaceful and empty. Yet beyond the stars visible to our eyes lies a universe so vast that it is difficult to imagine. Our gal ...

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest ...

Elon Musk has repeatedly said on record that neither he nor anyone at his company, SpaceX, has been provided any evidence that extraterrestrial life exists. However, journalist Ross Coulthart remains ...