Missouri isn’t exactly known for looking like the surface of an alien planet, but apparently nobody told Meramec Caverns in Sullivan about that. This underground wonderland looks like something a ...

If someone showed you photos of Onyx Cave without context, you’d probably assume they were concept art from the latest space ...

Scientists might have just found Earth's icy, distant cousin a few hundred million light-years away. HD 137010 b is one of thousands of exoplanets, or planets that orbit other stars, and is ...

Being able to spot the Earth, let alone any signs of life on our planet, would require an enormous telescope from 66 million ...

Green Bank Telescope rules out alien signals in interstellar comet 3I/ATLAS after rigorous scientific deep search.

David Eagleman is a neuroscientist at Stanford University and the author of eight books, most recently “Livewired.” ...

Does NASA have files on aliens? Jared Isaacman says no, and tells Ross Douthat on “Interesting Times” that extraterrestrials would pick a more exciting locale to visit than America’s naval bases.

Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

I don’t know how likely extraterrestrial life might be. But no matter what, the truth of Christianity will stand.

With the release, the American public could learn what, if anything, the government has documented about the unexplained ...

The best open-world sci-fi games let players explore the far reaches of space.