Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, "Mystery Hum and Mayans on Mars." ...

If alien life exists, its absence from our instruments may have several very different explanations. The longer the silence continues, the more interesting the mystery becomes.

I'm an outdoorsy person, so I go fishing often. But I'm also an indoorsy person. I mean, what even are these categories like ...

Seth MacFarlane is bringing the bizarre sci-fi hit Dungeon Crawler Carl to Peacock, featuring deadly alien dungeons and a ...

Are there intelligent life forms in the universe other than on Earth? This is a grand question that everyone has pondered at ...

Steven Spielberg has spent six decades making movies about the unknown, but he has never ended one quite like this. ‘Disclosure Day‘ closes not with an answer but with a single word, a cut to black, ...

The idea that extraterrestrial intelligence could be observing Earth sounds like science fiction, and there is currently no verified evidence that it is happening. But scientists do take a related ...

Strange radio signals have been detected from the direction of K2-155 d, about 238 light-years away. Here's what it could ...

With billions of potentially habitable worlds scattered across the universe, alien civilizations should be out there — yet ...

Over its decade of existence, science fiction TV series Stargate SG-1 developed an extensive and detailed backdrop of diverse characters. Many of the characters are members of alien species discovered ...

An alien radio signal from K2-155 d? Are there any alien civilizations out there? For several decades, scientists have been searching for evidence that they exist. That effort is collectively known as ...

Researchers earlier this month said they used the MeerKAT radio telescope in South Africa to detect radio waves on Beta ...