Later in December, the 3I/ATLAS interstellar comet will get as close to Earth as it ever will. Here's what to know.

Scientists studying 3I/ATLAS have spotted unusually slow gas around the interstellar comet, offering fresh clues about its ...

Today is the day that astronomers, amateur stargazers and alien conspiracy theorists alike have been waiting for: interstellar comet 3I/ATLAS is as close to Earth as it will ever get. But lest you ...

An interstellar visitor that has been under close watch since it entered the solar system is showing scientists something new about what it is made of. Astronomers using the Subaru Telescope in Hawaii ...

Twelve NASA missions have captured detailed views of comet 3I/ATLAS, the third known interstellar visitor, as it travels through the solar system ahead of its closest approach to Earth in December.

Our old pal, Comet 3I/ATLAS, is back in the news. The comet we breathlessly covered last year as scientists were mystified by this interstellar traveler, some of whom entertained the idea that it ...

Add Yahoo as a preferred source to see more of our stories on Google. Those hoping an infamous interstellar object that visited our cosmic neighborhood in 2025 was an extraterrestrial attempt to ...

Learn how Comet 3I/ATLAS began to emit methane as it approached the sun, releasing compounds contained within its inner layers. Comet 3I/ATLAS will soon leave our Solar System for good, but new clues ...

Comet 3I/ATLAS may have ended its journey through the solar system, but not before the Webb space telescope got one last glimpse of the rare interstellar visitor on its way out. Webb’s detailed ...

It would be great to get a spacecraft to an interstellar object to see it up close and to sample what it is made of. We learned a lot about comets from spacecraft encounters like the European Space ...