Steven Spielberg's new blockbuster coincides with real-world disclosures about the government's investigation of unidentified ...

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

Imagine the possibilities of discovering alien life on the super-Earth exoplanet K2-18b.

A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

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

Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for first contact with extraterrestrial life.

But the reviews for ‘Disclosure Day’ among the experts on UAPs—unidentified aerial phenomena—are decidedly mixed.

The object, called 3I/ATLAS, is only the third interstellar visitor ever detected passing through our Solar System.

Americans "deserve the truth," a U.S. congressman has told a press conference as part of a wider transparency campaign.

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

There's no conclusive evidence of alien life or government cover-ups. But the files released Friday by the Pentagon reveal ...