Sometimes "the universe comes to us," writes the European Space Agency. For the third time since 2017, an interstellar object ...

I/ATLAS, also known as C/2025 N1 (ATLAS), originated in a distant star system, far beyond the boundaries of our solar system.

Interstellar visitor Comet 3I/ATLAS was discovered just a week ago and ever since, astronomers across the world have been ...

Is the solar system an interstellar highway, with cosmic objects speeding past at warp speeds without human notice? That’s ...

You can watch comet 3I/ATLAS live online tonight (July 3), thanks to the Virtual Telescope Project, which will livestream views beginning at 6:00 p.m. EDT (2200 GMT).

Astronomers have confirmed the presence of 3I/ATLAS, a rare interstellar comet originating from a distant star system, now traversing our solar system.

3I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the galaxy.

Initially tagged A11pl3Z, it has been officially designated 3I/ATLAS and C/2025 N1 (ATLAS) — only the third known interstellar object after 1I/ʻOumuamua (2017) and 2I/Borisov (2019).

All eyes are on Comet 3I/ATLAS as astronomers worldwide chase the exotic ice ball through our solar system Nora Bradford Thu, July 3, 2025 at 8:15 AM PDT 5 min read ...

Astronomers do know that 3I/ATLAS is a comet that's about 670 million kilometers (416 million miles) away from the sun. Based on current projections, it poses no danger to planet Earth.

That will give us limited time to study 3I/ATLAS, but because it has been seen on its way into the solar system, we will at least have more time than with the other interstellar objects.