We're just weeks away from this interstellar visitor reaching its brightest in Earth's night skies. Will we see it?

Analyses of its emissions using NASA’s Neil Gehrels Swift Observatory indicate that the interstellar comet probably has a ...

Comets don't visit often — here's how to capture comet Lemmon, comet 3I/ATLAS, on your camera as they dance across our skies.

Water is the universal yardstick of comet science, the baseline for measuring how sunlight drives a comet's activity and ...

The interstellar object 3I/ATLAS has been something of a mystery ever since it graced our solar system. From all outward ...

Astronomers around the world are baffled by the strange behavior of 3I Atlas, a possible interstellar comet whose sudden ...

The spacecraft in question are NASA’s Europa Clipper, going to the eponymous icy moon of Jupiter, and the European Space ...

Our solar system has an interstellar visitor. It’s an object called 3I-Atlas, and is just the third interstellar object to ...

3I/ATLAS is named for its status as one of three interstellar objects ever discovered in our cosmic neighborhood, as well as ...

Astronomers analyzing observations of interstellar comet 3I/ATLAS using the W. M. Keck Observatory have discovered further ...

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest ...

Astronomers just caught a rare glimpse of an interstellar comet as it zoomed past Mars. Images of the object, dubbed 3I/ATLAS ...