Astronomers around the world are closely watching an interstellar visitor unlike anything formed in our solar system.

Astronomers have captured striking new images of the interstellar object 3I/ATLAS shooting a massive jet of gas and dust ...

A new image shows the growing tail of a comet from another star system streaking across our solar system. The image of comet 3I/ATLAS was captured on Aug. 27 using one of the telescopes at the ...