Scientists have identified new clues that could help astronomers spot one of the most famous hypothetical alien ...

It’s a real space oddity. Former Pentagon UFO investigator Luis Elizondo claims the US government possesses unreleased ...

Researchers in a recent breakthrough study have found the possibility of structures in the Milky Way that could be built by ...

The search for intelligent alien life goes far beyond listening for simple radio signals. This documentary explores how ...

Get the latest federal technology news delivered to your inbox. You might think this column is about UFOs and the Pentagon's ...

Project Hail Mary, Solaris, and The Hitchhiker's Guide to the Galaxy are all among the very best sci-fi books set in space.

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new ...

At nearly twice Earth's size with a denser atmosphere, this fictional world hosts creatures that dwarf anything alive today, ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

Investigating an area of interesting light rock seen from orbit, Curiosity found some particularly weird-looking structures.

, July 10 -- Scientists searching for signs of intelligent extraterrestrial life say some of the coldest objects in the Milky ...