A NASA rover image of a rock formation on Mars resembling a doorway has sparked speculation about alien life, though experts ...

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

Imagine a super-advanced alien civilization that needs insane amounts of energy way beyond our puny solar panels and wind ...

A NASA Curiosity rover image has sparked debate after a UFO hunter claimed it shows an alien missile, though NASA attributes ...

Credit: ESO/Digitized Sky Survey 2 A giant planet spent more than a decade concealed inside one of astronomy’s most closely ...

Explore 25 of the most famous movie aliens, from terrifying Xenomorphs to beloved E.T. Discover iconic extraterrestrials that ...

James Cameron’s high-octane film sequel is a blueprint for modern action space slashers ...

Winnie Ama couldn't believe her luck when she had the chance to sing her original song in the new Supergirl movie - but there was a catch.

After more than half a decade of dormancy, one of the longest-running sci-fi franchises of all time recently bounced back ...

Rebecca Ferguson's sci-fi movie with Ryan Reynolds and Jake Gyllenhaal has become the perfect sleeper hit on streaming.

The cosmological principle is the foundation of modern cosmology – but its usefulness doesn’t necessarily make it true, says columnist Leah Crane ...