The object is likely a 12-mile wide asteroid or comet from way, way out of town that just happens to be passing through our ...

Astronomers have discovered a rare instance of a interstellar comet speeding through the solar system. The 3I/ATLAS was first ...

The object, a celestial body from another star system, was discovered on Tuesday by the University of Hawaii’s Asteroid ...

For years, astronomers have been searching for a mysterious ninth planet lurking in the dark outer reaches of our solar ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...