Comet news, features and articles

The interstellar comet 3I/ATLAS does not come from our corner of the Milky Way, and may be a time capsule of the early galaxy, new research into its trajectory hints.

Comet Lemmon, discovered earlier this year, will make a close approach to Earth later this month, giving skywatchers the chance to see its surprising lime-green glow.

Comet C/2025 R2 (SWAN) can now be seen with binoculars close to Mars in the western sky after sunset.

New photos captured during the recent "blood moon" total lunar eclipse show that the interstellar comet 3I/ATLAS may be turning green as it gets closer to the sun.

The Gemini South Observatory opened up its telescope to the public as a team of astronomers looked at the interstellar comet 3I/ATLAS in real time.

New images reveal interstellar comet 3I/ATLAS beginning to grow a signature tail as it zooms closer to the sun ahead of a close encounter with Earth this fall.

NASA's James Webb Space Telescope has made its first observations of interstellar comet 3I/ATLAS, revealing that the comet appears to be unusually rich in carbon dioxide.

New images from the Hubble telescope show an extrasolar entity as it hurtles through our solar system at speeds of more than 130,000 mph (210,000 km/h).

Detailed photos from the newly operational Vera C. Rubin Observatory have revealed that the recently discovered interstellar object 3I/ATLAS is roughly 7 miles wide, making it the largest of its kind ever seen.

New photos, including a striking technicolor timelapse, show off the newly discovered interstellar object 3I/ATLAS as it shoots toward us through the solar system.