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.

The most consequential signal humanity ever detects from another civilization may not arrive as a calm introduction. It may ...

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 ...

Aliens did not visit Earth in the distant past. They didn't build the pyramids or rule ancient Greece from Mount Olympus or teach Mesoamericans how to plant corn. How do I know? Because they did ...

Life on Earth is a precious thing, especially given what astronomers know about the visible universe. Although researchers have so far identified over 6,000 exoplanets beyond our solar system, only a ...

What if an alien civilization did not just exist somewhere in the universe, but actually reached Earth in the distant past? This video explored the ancient alien theory through the lens of the Fermi ...

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

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself? The idea that aliens assisted the buil ...

Scientists have uncovered a hellish “lava world” where temperatures soar to a blistering 2,700 degrees Fahrenheit — hot ...

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological ...

Ryan Gosling couldn't be more charming in "Project Hail Mary," based on Andy Weir's novel. Comparisons to "The Martian" aside ...