The interstellar comet 3I/ATLAS is leaving our solar system for good. Here's what to know about its journey and NASA's observations.

Interstellar comet 3I/ATLAS has steadily been making its exit ever since it had a rendezvous at the end of October with the sun.

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar ...

Comet 3I/ATLAS is not coming back — and NASA says it is not a threat to Earth — but a new trajectory study argues we could ...

Some asteroids are quietly speeding up or veering off their predicted paths, yet telescopes see no glowing tails or hazy comas that would mark them as comets. That mystery has turned a once obscure ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. After months of unprecedented observations, astronomers are ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the third known interstellar comet ever spotted. When scientists turned NASA’s ...

A newly discovered comet has astronomers excited, with the potential to be a spectacular sight in early April. C/2026 A1 (MAPS) was spotted by a team of four amateur astronomers with a remotely ...

Jonti Horner does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

C/2024 E1 (Wierzchos) brightened significantly ahead of its close approach to the sun. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...

ESA’s Comet Interceptor mission is designed to fly by a long-period comet that could be a pristine remnant from the formation of the solar system. Credit: ESA WASHINGTON — A delay in one European ...