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 ...

I/ATLAS's chemical composition, upcoming invisibility, and trajectory suggest to experts that it is alien technology, but ...

Unlike most known comets, 3I/ATLAS has shown early water release far from the Sun and unusually high levels of carbon dioxide ...

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

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

What makes 3I/ATLAS especially intriguing is that the comet might be three billion years older than our entire Solar System.

The Earth will soon finally learn the truth about 3I/ATLAS after months of mothership rumors and speculation about advanced ...

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

Harvard professor Avi Loeb discusses the first new images of 3I/ATLAS after it passed Mars. Early photos from international ...