Although many Halo games' final missions are highlights, the series has many amazing levels that are just as exciting to go ...

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

A group of astronomers has detected a sugar molecule swirling inside a cloud of gas and dust near the centre of our galaxy.

Former Pentagon UFO investigator Luis Elizondo claims the US government possesses unreleased photographs showing what appear ...

Authorities, though, have a much more mundane explanation: space junk. The Australian Space Agency said the spheres are ...

A new study by Amirnezam Amiri of the University of Arkansas explores how these hypothetical "Dyson swarms" would appear ...

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

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

Season 2 is officially filming at Pinewood Studios, with FX dropping a behind-the-scenes update. Tracey Ullman, Sam Spruell, and Jerome Flynn join Pe ...

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.

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