A NASA rover has discovered signs of an ancient river beneath Mars' surface, using ground-penetrating radar to reveal buried ...

A complete episode from the first season of Mystery Science Theater 3000, "Star Force: The Fugitive Alien 2," which hasn’t ...

When NASA’s Perseverance rover landed in Jezero Crater in 2021, its primary mission was to scour the remnants of a dried-up Martian lakebed for signs of ancient life. Scientists have been focused on ...

The fictional biologist in ‘Project Hail Mary’ claims that potential alien organisms might not be made of carbon or require water, unlike life on Earth.

Images of a pyramid-like shape on the surface of Mars are propelling theories that alien beings constructed the object, but one expert on the Red Planet has some disappointing news for the most ...

Movies like "Disclosure Day" and "Project Hail Mary" renew our fascination with extraterrestrials and the idea that humankind ...

There's more evidence that water once flowed on Mars with the discovery of an ancient river delta deep below the surface.

Researchers studying Mars uncovered something unusual hiding inside ancient Martian rocks: a new form of matter we’ve never seen ...

A strange formation spotted deep within a massive Martian canyon is once again fueling debate over whether something more ...

NASA's Perseverance has been exploring Jezero Crater for five years, traveling across the Western Delta, a river structure ...

A documentary filmmaker sparked a discussion of advanced Martian civilizations after sharing footage that appeared to depict ...

Andy Weir discusses his science-fueled novel “Project Hail Mary,” which has been adapted into a film that opens in theaters ...