Do not shout ‘alien!’” Amid surge of public interest in UFOs or UAP, one group updated its rules for how news of ...

For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a ...

The 72 files released on Friday don’t include the kind of blockbuster revelation that Trump has teased. There’s no conclusive ...

This video breaks down why K2-18b has suddenly become one of the most important planets in the search for life beyond Earth.

Half a century after "Close Encounters of the Third Kind," the director returns to the subject of UFOs with "Disclosure Day." ...

Many have watched recently released UFO videos, but most still think the government knows more than it is saying.

Every few months, someone announces we’re on the verge of finding alien life, and the headlines go predictably insane. What ...

One of science’s greatest false alarms occurred on Aug. 7, 1996, when NASA announced that scientists had discovered “strong circumstantial evidence that life once existed on Mars.” That evidence was a ...

A screenshot from the White House’s Aliens.gov page shows alien-themed imagery and the phrase “They Walk Among Us.” The page launched amid renewed public attention on UFOs, UAP disclosures and viral ...

On the ocean floor near the Galapagos Islands, a submersible controlled by scientists came across a mysterious octopus as blue as the ocean that "could curl up in the palm of your hand." "He's tiny!

It’s tiny. It’s blue. And it has scientists awe-struck. A golf-ball-size octopus found on the deep seafloor off the Galápagos Islands is an entirely new species, scientists just announced. In July ...