Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, ...

Some UFO cases remain difficult to explain, but that is only the beginning of the scientific question. The evidence needed to ...

Suppose an alien civilization discovers Earth and decides to investigate. Before it chooses a landing site or considers how ...

Claims that aliens are already here are everywhere, but proving them is another matter. The strongest cases become more ...

A new study proposes searching the moon for remnants of ancient extraterrestrial technology. Researchers suggest the moon's surface could preserve microscopic "technosignatures" left by alien ...

The mathematical certainty that 'they' definitely exist in the universeWhen looking up at the night sky, everyone has surely ...

In the coming month, humans are going to experience their first encounter with an alien civilization as predicted by blind ...

"Humans evolved from apes." Many people were taught this in school. However, when you start thinking about it a little more deeply, various questions arise.Why did only humans build a civilization?

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 Pictoris b.

John Brandenburg—a plasma physicist at an aerospace development company—argues that there was an alien civilization on Mars. He cites data from NASA’s Curiosity rover, claiming that xenon levels on ...