The European Space Agency (ESA) continues to deliver new insights into 3I/ATLAS, the interstellar comet that crossed the ...

“Observing 3I/ATLAS is like taking a fingerprint from another solar system,” explained Nathan Roth, an astronomer at American University.

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

Learn about the breakup and bright outbursts of comet K1, caught by the Hubble Space Telescope on accident.

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

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

17 - SPHEREx detected icy fragments around 3I/ATLAS before perihelion, but ice signatures vanished afterward, replaced by ...

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 ...

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

A last-minute target switch led researchers to Comet C/2025 K1 (ATLAS), which Hubble then watched split into at least four ...

Comet MAPS could soon become as bright as Venus, offering a once-in-a-decade spectacle for the naked eye. Here is what to ...

Analysis of the tail of 3I/Atlas reveals that it contains an anomalous proportion of methanol, a class of alcohol used in fuels.