Comet 3I/ATLAS is a rare visitor passing briefly through our solar system. Here’s how to find it in the night sky—and what ...

Comet 3I/ATLAS, the third interstellar object ever detected, reached its closest point to Earth overnight from Thursday to Friday (Dec. 18 to 19), and it remains in a good viewing position tonight.

Our third known interstellar visitor, comet 3I/ATLAS, will reach its closest point to Earth today, December 19. It will still be pretty far away, at 270 million kilometers (168 million miles) away, ...

Today is one astronomers, stargazers and alien conspiracy theorists have been waiting for: interstellar comet 3I/ATLAS is as ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. You’ve likely already heard about two comets visible from ...

The Europa Clipper headed for the Jovian system performed a rare observation in the ultraviolet spectrum of the interstellar ...

NASA’s Europa Clipper spacecraft has recorded important new observations of the interstellar comet 3I/ATLAS using its ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Comet Lemmon (C/2025 A6) as imaged using a Seestar S30 smart ...

Comet Lemmon, a comet discovered in January, may be visible with the unaided eye after sunset this week. Credit: Creators.com illustration It’s been a few years since we’ve seen a decently bright ...

The Southwest Research Institute-led Ultraviolet Spectrograph (UVS) aboard NASA's Europa Clipper spacecraft has made valuable observations of the interstellar comet 3I/ATLAS, which in July became the ...

We are in Germany and it's winter, so we can confidently assume that it is cold, with possible snow covering the fields and roofs of houses. Here we meet the protagonist of this story, farmer and ...

A new comet was discovered June 2011 with the Panoramic Survey Telescope and Rapid Response System on a mountaintop in Maui, Hawaii. Comet C/2011 L4 (PanSTARRS) came close to Earth earlier this week ...