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

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from a European Space Agency orbiter on its way to Jupiter.

The interstellar comet 3I/ATLAS is leaving our solar system. See new photos from the a European Space Agency orbiter on its ...

The comet formed in a cold and distant part of the early Milky Way up to 12 billion years ago, putting it just under 2 ...

If 3I/ATLAS wasn’t enough of an excitement, our solar system has recently welcomed a new comet visitor. However, like 3I/ATLAS, it hasn’t arrived here from an interstellar home, but from a thick ...

PUNCH’s observations of comet 3I/ATLAS from Sept. 28 to Oct. 10, 2025, when the comet was between 231 million to 235 million miles from Earth. Each frame is a daily stacked image, made up of multiple ...

Comet 3I/ATLAS, the third known interstellar object ever detected passing through our solar system, carries a chemical signature that does not match what astronomers typically see in comets born ...

The interstellar comet 3I/ATLAS will make its closest approach to Earth on Dec. 19. Originating from outside our solar system, the comet is not a threat to Earth. While not visible to the naked eye, ...

Learn how ALMA observations revealed unusually high levels of methanol in interstellar comet 3I/ATLAS and what the molecule’s chemistry may reveal about how icy bodies form around other stars.

"It's going to look different because it didn't come from our solar system and that's what makes it so magical." When you purchase through links on our site, we may earn an affiliate commission.

On July 1, 2025, the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescope in Río Hurtado, Chile, announced the discovery of something truly spectacular: a mysterious object that appeared to ...

Harvard astrophysicist Avi Loeb says interstellar comet 3I/ATLAS likely comes from the Milky Way's disc, as astronomers ...