An explorer in 1909 claimed he found an ancient underground city inside the Grand Canyon—filled with rooms, hieroglyphs, and ...

Looking ahead, the comet will pass roughly 33 million miles from Jupiter in March 2026. Loeb noted the scientific value: monitoring 3I/ATLAS with the Juno spacecraft could reveal unusual activity, ...

Claims that the Nazca mummies represent a new alien species originate from a self-published paper by a retired paleontologist ...

Decades ago, a spacecraft suggested Saturn's largest moon, Titan, had an ocean. New observations suggest that the liquid may look more like slush.

These out-of-place artifacts, or OOPArts, are surprising for their place and time — but there's an explanation behind each one.

An ‘alien’ gargoyle carved on the exterior of a 12th-century Scottish abbey is causing waves on social media. Believed to have been founded as a holy site in the 7th century by Saint Mirin (or Saint ...

A new book released by NASA as part of the official NASA History Series examines the contributions that archaeology and anthropology can make to contemporary SETI (Search for Extraterrestrial ...

Is it the invasion of the genome snatchers? Just in case the idea of aliens walking around in human skin suits wasn’t frightening enough. An outlandish study asserts that aliens might have abducted us ...

Alien: Earth definitely gets a lot right, but after watching the season 1 finale, I'm torn, because it gets a lot of things wrong, too. There's clear commitment to certain aspects of the Alien ...

'Alien: Earth' premiered its first two episodes on Aug. 12 Caroline Blair is a writer for PEOPLE. She has been writing about celebrities, entertainment, reality TV stars and news for five years. Alamy ...