An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

In June 1947, Kenneth Arnold saw something strange in the sky. What he saw sparked a national UFO craze-but it was far from ...

Well, as a matter of fact, I have often had close encounters with aliens, only I never bothered to mention it here. For this ...

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

Space exploration was a major theme of a state House hearing on Tuesday, even as the budget deadline looms over lawmakers.

A NASA‑linked study argues that alien probes could already be in our Solar System, but our surveys are still too crude to ...

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

NASA astronaut Anil Menon spoke with Newsweek's Leonardo Feldman about life in space, recently declassified UFO sightings, and future missions to Mars.

We explore the litany of cinematic deaths of the 1990s and select the five that prove the funniest of the lot. Read more ...

Ross Coulthart speculates SpaceX employees could be read into secret UFO programs.

Photos of amazing, almost unreal places Who needs fantasy? Earth is full of “alien planets” and surreal beauty beyond ...

A new study into the 3I/ATLAS interstellar comet points to it having been born as far back as 12 billion years ago in a very ...