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 ...

3I/ATLAS interstellar object has revealed new and unusual features in recent observations. Scientists detected a color shift, a surprising anti-tail, and a gas composition that sets it apart from ...

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

JWST detected rising methane emissions from interstellar comet 3I/ATLAS, exposing ancient interior ice and offering new ...

A mystery interstellar object discovered last week is likely to be the oldest comet ever seen—possibly predating our solar system by more than 3 billion years, researchers say. The "water ice-rich" ...

On July 1, 2025, astronomers caught sight of a mysterious object racing through the solar system. This object, now named 3I/ATLAS, became only the third known visitor from outside our planetary ...

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

Interstellar objects are visitors from solar systems beyond our own, and the third ever such object, known as 3I/ATLAS, has just been discovered. Using the Gemini North telescope, astronomers have ...

Rep. Anna Paulina Luna and Harvard Scientist Avi Loeb are calling for NASA to monitor the Manhattan-sized interstellar object 3I/ATLAS as it passes the sun on Halloween Eve to ensure it does not drop ...

3I/ATLAS showed a complex tail structure early this morning of November 8, 2925. It was observed at 29 degrees elongation from the Sun. In July and August , other researchers calculated that 3I Atlas ...

Interstellar comet, 3I/ATLAS, might be one of the oldest celestial bodies ever seen, potentially forming 10 to 12 billion years ago. This ancient visitor, detected in July 2025, could offer ...