Comets look simple—a glowing head with a long tail—but almost everything about them is misunderstood. Their tails don’t trail ...

Comet C/2025 R3 may reach rare brightness levels, offering a spectacular (and unpredictable) show before sunrise.

The breakup was caused by the extreme conditions near the Sun; during its latest approach, C/2025 K1 flew as close as 0.334 ...

That community recently came together to observe Comet C/2023 A3 (Tsuchinshan-ATLAS) as it passed through the night sky. Near ...

Since the interstellar comet 3I/ATLAS was discovered this past July — just the third confirmed object to arrive from another star — astronomers have been closely following its passage through our ...

The comet 3I/ATLAS is taking a long holiday journey this year. It’s visiting from another solar system altogether. Those interstellar origins... What to know about the 3I/ATLAS comet and why people ...

Comet C/2025 K1 (ATLAS) fragmented after its October 2025 solar approach, with telescope observations documenting multiple ...

Weeks after a rare interstellar comet made its closest pass to the sun, it will make it’s closest pass to Earth. The comet has traveled billions of miles through other systems in space. Its orbit is ...

During the past few years, we have witnessed a bumper crop of bright naked-eye comets, beckoning us to set up a camera and record their beauty to share with friends and family. However, the next great ...