Gas leaving the interstellar comet 3I/ATLAS moves at roughly half the speed of gas coming off Solar System comets at the same ...

Earth will pass through debris left by Halley’s Comet, creating the Orionid meteor shower. Here is when and how to watch it ...

Comet 220P McNaught attracted attention after a dramatic outburst caused its brightness to increase by hundreds and possibly ...

Astronomical objects can approach the Sun, with some comets and asteroids traveling remarkably close and surviving. Mercury, ...

October skywatchers can see Saturn at opposition, catch meteors from Halley’s Comet during the Orionid peak, and watch the Moon sweep past the famous Pleiades star cluster. Moonlight may obscure some ...

Melted grains in comet dust from NASA's Stardust mission match no known meteorite and likely formed far from the sun, possibly amid ice.

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. A brightening comet meets deep space on Friday morning — and ...

It was early January 2025 when a faint light spot was observed at the Mt. Lemmon Observatory in Arizona. Follow-up observations revealed that the object was a comet visiting from the outer edge of the ...