Speculations have been circulating that an interstellar comet will reach its closest point to the Sun at a safe distance of ...

Astronomers at Spain's University of A Coruña have reconstructed the 10-million-year trajectory of interstellar comet 3I/ATLAS, revealing it as a cosmic time capsule.

I/Atlas is different, it comes from somewhere else entirely. “It’s sort of like a messenger from afar,” said Jacqueline McCleary, an astrophysicist at Northeastern University. “Interstellar objects ...