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

NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth — but closer to the red planet than us at a safe 150 million miles (240 ...

Astronomers spot a mysterious object from interstellar space. The object, 3I/Atlas, is traveling at 60 km/s. It poses no ...

Astronomers have confirmed the discovery of an "interstellar object" named 31/Atlas passing through the inner solar system.