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

The levels of a heavy form of hydrogen in 3I/ATLAS are 30 to 40 times higher than in Earth's oceans, suggesting the comet has ...

NASA's Hubble Space Telescope has captured a rare cosmic moment: a comet breaking apart in real time.

Data collected by NASA's missions about interstellar comet 3I/ATLAS will continue to reveal insights about the comet and interstellar objects at large.

The interstellar comet 3I/ATLAS has just done something no visitor from another star system has ever been caught doing: it lit up in X-rays. As its elongated orbit carries it through the inner solar ...

C/2025 K1 (ATLAS) was on its way out of the solar system when it did the fateful thing that many comets do. Reading time 3 ...

Astronomers have identified an interstellar comet entering our solar system, sparking excitement and intrigue within the scientific community. This rare event offers a unique opportunity to study an ...

For practically as long as NASA's Hubble Space Telescope has circled Earth, astronomers have wanted to use it to see a comet ...

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.

Astronomers have spotted something unusual in a comet passing through our Solar System. 3I/ATLAS, only the third confirmed interstellar visitor ever s.

Comets are pristine remnants left over from the solar system's formation 4.6 billion years ago, rather than younger fragments created by collisions between larger bodies, a new study suggests. The ...

The comet contains higher levels of this simple alcohol than almost all known comets from our solar system.