Ancient Greeks believed in alien life, as well as in gods, souls, and beings that inhabited the Moon, stars, and Heavens.

When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that ...

Aristotle believed the planets revolved around Earth and God could not have created other worlds. Today, scientists scour the ...

A research team has developed a new approach to detecting life beyond Earth that does not rely on identifying specific ...

A new study proposes detecting life in space by spotting patterns across many planets instead of focusing on one at a time.

The Big Four Ice Caves Trail near Granite Falls is exactly that kind of gift, a slice of otherworldly beauty that somehow ...

Over four decades, the Alien franchise has brought many different versions of the xenomorph creature to theaters.

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and living safely—beyond our planet. “I was like, ‘OK, I'm pretty sure that ...

Deep within massive rocky exoplanets, hidden oceans of molten rock may be generating powerful magnetic fields in an ...

The awe-inspiring Spodnic UFO at Melin Mabes, a four-acre glamping site, will be featured on an upcoming episode of World's ...

Some sci-fi books are so great that they could sustain multiple seasons of a prestige TV shows, even though they are a ...

(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be ...