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.

Comet 3I/ATLAS, a rare interstellar visitor, is visible this week as it departs the solar system, with some public events ...

This week marks the last chance for backyard astronomers to see interstellar Comet 3I/ATLAS before it races on its journey ...

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, ...

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

On Friday, an object that formed outside of our galaxy passes close enough to Earth that we have a chance to see it in the night sky. It’s taken the astronomy community by storm. What is Comet ...

The comet will reach its closest point to Earth at 1am EST (6am GMT) today, coming within 270 million kilometers of us. ...

Hawaii’s Gemini North telescope has captured new images of interstellar comet 3I/ATLAS with a green glow as it remerges from ...

A shocking image shows how the night sky is being crowded by satellites. Astrophotographers observing Comet C/2025 A6 (Lemmon) have captured striking evidence of how rapidly Earth’s near-space ...

This month will bring some striking celestial sights, including one of the year’s best meteor showers and a glowing Saturn-moon pairing. December’s “cold moon”—seen here rising above Whitby Abbey in ...