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

Interstellar comet 3I/ATLAS will make its closest approach to Earth this month, whizzing by at 270 million kilometers (168 ...

The rare interstellar comet, also known as 3I/ATLAS, was first discovered in July and has been photographed several times.

It's possibly as big as Manhattan, likely older than our own solar system, and it's traveling through space at speeds of up to 153,000 miles per hour.

As the 3I/ATLAS nears its closest distance to Earth, an international team of astronomers now says the space rock may be covered in active, icy cryovolcanoes. If true, the evidence detailed in their ...

By Tom Hawking Published Nov 30, 2025 9:00 AM EST Tayfun Coskun/Anadolu via Get the Popular Science daily newsletter💡 ...

Interstellar comet 3I/ATLAS is now within 300 million km of Earth. Discover why NASA and ESA are tracking this ancient ...

There's been a lot of speculation recently about interstellar visitor 3I/ATLAS—much of which is probably caused by ...

NASA on Wednesday released new images and data of Comet 3I/ATLAS, the rare interstellar object that set off weeks of ...

Amateur observers and social media users sparked viral claims that interstellar object 3I/ATLAS and comet C/2025 R2 (SWAN) ...

Skywatchers will have a lot to look at in the night skies over Alabama in December. A super moon, a meteor shower and a comet ...

As the 2025 year draws to a close, the December night skies offer a promising but dazzling cosmic trio surprise for the sky ...