NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth ...

Newfound interstellar object 3I/ATLAS may be carrying pristine material from early in the Milky Way’s star-forming history.

Though 3I/ATLAS will never come close to Earth, its passage offers a rare chance to study material beyond our solar system ...

In the predawn hours of July 1, 2025, a faint streak of light caught the attention of astronomers peering through data from a ...

An interstellar object called 3I/ATLAS is now moving through our solar system, the third one we've seen in the last eight ...

Astronomers on Wednesday confirmed the discovery of an interstellar object racing through our Solar System -- only the third ...

An object dubbed 3I/ATLAS is only the third interloper from outside the Solar System seen in all of human history.