The object 3I/ATLAS made it past the Sun in one piece, which led Harvard astronomer to double down on his earlier argument ...

Astronomers have attempted to explain the non-gravitational acceleration of comet 3I/ATLAS, our third confirmed interstellar ...

A comet known as 3I/ATLAS made news in July when it was confirmed to have originated outside Earth's solar system. One infamous theory even posited that the interstellar interloper, estimated to be ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our solar system—only the third ever spotted, though scientists suspect many more may slip past unnoticed. The ...

The effort to monitor the comet, estimated to be the size of a city block, was spurred on by Harvard astrophysicist Avi Loeb, a vocal proponent of the theory that 3I/Atlas could have an ...

The vast majority of matter is dark – invisible until it is detected only through its gravitational effects. The newly discovered object could be a clump of dark matter, or it could also be a compact, ...

MeerKAT radio telescope detected hydroxyl (OH) absorption lines from interstellar object 3I/ATLAS, marking its first ...