A comet discovered last year — known as C/2023 A3 Tsuchinshan-ATLAS — is set to make a close approach to Earth in the coming days. The snowy dirtball is nearly 2 miles in diameter and its tail of dust ...

ORLANDO, Fla. – One of the most famous comets in history will soon be back on its way toward the inner solar system. Don’t get too excited just yet, though. It still has 38 more years to go until we ...

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 ...

The Hubble Space Telescope has captured the best picture yet of a high-speed comet visiting our solar system from another star. NASA and the European Space Agency released the latest photos Thursday.

There’s a visitor in town, and its name is 3I/ATLAS. The presumed interstellar comet presents a rare opportunity for astronomers to study an object born a long time ago in a star system far, far away.

CAPE CANAVERAL, Fla. — Telescope observations reveal a growing tail on the comet that’s visiting from another star. Released Thursday, the pictures taken by the Gemini South telescope in Chile late ...