Earth will be hosting a new guest this fall. No, it's not an alien. It's an asteroid. The space rock, which has been named ...

Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also ...

Astronomers will soon begin a search of 2,800 galaxies for signs of advanced alien civilizations using a radio telescope in ...

The three-quarter moon rose over Europe last week as serene and remote as ever, but dropping faster and faster through its gravitational field was a small, alien object: a metal sphere blazoned ...

A TikToker says he’s a time traveler from the year 2671. He keeps warning us about events that’ll happen by the end of this ...

Photosynthesis changed Earth in powerful ways. When photosynthetic organisms appeared, it led to the Great Oxygenation Event.

The energetic streams are together 23 million light-years in length—roughly as long as 140 Milky Way galaxies lined end to end ...

(390 million mi) from Earth, underneath the cold seas of Europa, a horrifying, and vastly intelligent creature lurks. Can our ...

On Saturday, a Reddit post to the Fort Wayne “subreddit” marked the 10th anniversary of a reported UFO on Sept. 16, 2014.

Whether you want to leap across time, slide into a new reality, or have an out-of-this-world laugh, here are the best sci-fi ...

The ESA's Juice mission designed to scan Jupiter's moons for signs of life has used those instruments to confirm Earth is ...

Although the supposed crashed Roswell UAP was little more than a US Air Force balloon, the idea that aliens visited the ...