The interstellar comet has reappeared after months hidden behind the sun, offering astronomers fresh clues about how comets form and travel through space.

Astronomers confirm that 3I/Atlas is still intact, despite viral posts claiming it was destroyed near the Sun.

I/ATLAS is a comet, not an alien, according to many experts, though some celebrities, and even one Harvard professor, have ...

A newly discovered comet named C/2025 V1, which some have compared to 3I/ATLAS, is due to make its closest approach to Earth on Tuesday, Nov. 11.

The 3I/ATLAS comet was first spotted in July near Jupiter after it entered our solar system from another universe. Here’s what’s known about it and what we’ve learned so far.

I/ATLAS recently passed its closest point to the sun. Because of its unusual behavior, some scientists are wondering if it's ...

The comet could be older than our solar system. The comet is also distinct because nickel vapor was detected in the gas ...

Michigan skygazers, there's still time left to bundle up under the night sky and enjoy dazzling shooting stars, and even a pair of comets. The Orionids, Southern Taurids and Northern Taurids meteor ...

Two comets, Lemmon and SWAN, are visible in the night sky through October 2025. Comet Lemmon will appear green and is best viewed in the northwest sky after sunset. Comet SWAN is dimmer and best ...