Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

It's possibly as big as Manhattan, likely older than our own solar system, and it's traveling through space at speeds of up ...

"It's going to look different because it didn't come from our solar system and that's what makes it so magical." ...

While the feds idled, an interstellar object known as 3I/ATLAS was barnstorming the solar system, at a speed that reached 153 ...

In a move that has electrified the scientific community, NASA will host a live event at 3 p.m. EST, Wednesday, Nov. 19, to ...

New research shows that Theia, the planet that collided with Earth and formed the Moon, was a rocky world born closer to the ...

NASA released fresh images on Wednesday of the interstellar object called 3I/ATLAS that astronomers have determined is a ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon ...

With the government reopened, the space agency at last released pictures captured by a fleet of government spacecraft of an ...

NASA has unveiled the close-up pictures of an interstellar comet that is the third confirmed object to enter our solar system ...

The space agency got a close look at the interstellar visitor over the past few months as it zipped by Mars and the sun ...

Interstellar comet 3I/ATLAS has spent the last several months on a tour of our solar system. NASA spacecraft and telescopes ...