NASA releases unseen 3I/ATLAS images following the US government shutdown. Discover why this ancient interstellar visitor is ...

From our limited observation time, astronomers have determined ‘Oumuamua is a small cigar-shaped object, but we didn't know exactly how small until now. Share on Facebook (opens in a new window) Share ...

Now, researchers from the Harvard Smithsonian Center for Astrophysics have revived the idea that 'Oumuamua could be an alien spacecraft. While we've recategorized 'Oumuamua a few times, we can say ...

Billions of years ago, while the solar system was still young, a massive object may have drifted into it. It's not a spaceship, but it is an alien visitor in its own right—a colossal interstellar body ...

The Vera Rubin telescope is poised to kick off an explosive era of discovery. "It's like old-fashioned astronomy: Find the thing, point telescopes at it, argue about it. It's going to be fun." ...