Studied by astronomers for a brief moment, the C/2025 K1 ATLAS comet was spotted by telescopes as it split, providing a unique opportunity for research.

New images show that comet C/2025 K1 (ATLAS) has fragmented after passing its closest point to the sun, ahead of its close approach to Earth later this month. This is not the interstellar comet ...

A comet, dubbed C/2025 K1 (ATLAS), spectacularly broke apart into three huge chunks — and anybody with an eight-inch telescope or bigger can catch the resulting fireworks show for the next several ...

Astronomers in the U.S. are tracking a rare comet—C/2025 K1 (ATLAS)—which is something quite special. While comets typically appear green or sometimes blue in sunlight. because of their different ...

Our readers sent in hundreds of images, capturing everything from the activity of the Sun and distant nebulae to Comet Lemmon ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

The interstellar comet 3I/ATLAS made its closest approach to Earth today (Dec. 19, 2025). Here's the latest news you need to ...

A stray comet from another star is swinging past Earth. Discovered over the summer, the comet known as 3I/Atlas will pass ...