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 you’ll need to catch a glimpse.

Comet 3I/ATLAS, the third interstellar object ever detected, will swing closest to Earth overnight from Thursday to Friday (Dec. 18 to 19). Here’s how to see it.

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 ...

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 ...

We humans are a curious bunch. Whenever we come across something unfamiliar, our minds naturally start filling in the blanks about what it could be. That’s exactly what’s happening with comet 3I/ATLAS ...

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

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 ...

Comet 3I/ATLAS has arrived in the inner solar system behaving as if the usual rules of comet physics were optional. Instead ...

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 ...

A newly discovered comet is about to make its closest pass to Earth on Tuesday night. It should be visible over the Central Coast before it disappears — and won’t be seen again for more than a ...

In late April 2026, a long-period comet will swing through the inner solar system. It will likely be visible with binoculars, ...

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 ...