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

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

Want to catch a glimpse of the planetary alignment from Arizona? Here's what to know, including a list of official dark sky ...

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

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 ...

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 ...

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 ...

The infrared space telescope also detected water vapor, carbon dioxide and organic compounds streaming from the departing comet two months after it made its closest approach to the sun. When you ...

Comet C/2025 K1 didn't survive its latest flyby of the Sun, but at least it put on an amazing show. Share on Facebook (opens in a new window) Share on X (opens in a new window) Share on Reddit (opens ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London. Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and ...

On February 17, the comet will make its closest approach to Earth from 94 million miles, roughly as far as the Sun.