Our latest known interstellar visitor, comet 3I/ATLAS, is currently making its way out of the solar system, after passing by the sun late last year. Scientists have been racing to study the rare guest ...

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Comet 3I/ATLAS arrived from beyond the Solar System carrying a chemical story unlike anything astronomers had measured before ...

Cropped image of NASA’s James Webb Space Telescope observation of comet 3I/ATLAS with its Near-Infrared Spectrograph ...

Astronomers have revealed new details about the makeup and age of a visiting comet that was born around a distant star. They ...

I/ATLAS arrived fast, bright, and strange. When astronomers spotted it on July 1, 2025, they knew almost immediately this was no ordinary comet.

Exactly where the comet 3I/ATLAS came from within the Milky Way remains a mystery.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. An interstellar comet is passing through our solar system: here is ...