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 ...

During last year’s brief visit from the comet 3I/ATLAS, astronomers got an extremely rare glimpse into the cosmos beyond our ...

Whereas the more sensational news item regarding the interstellar object, 3I/ATLAS, is that it sparked some speculation about being an extraterrestrial spacecraft when it was discovered last year, the ...

Interstellar comet 3I/ATLAS has given astronomers an opportunity they rarely expect to receive. Unlike the countless icy bodies that circle the Sun, this object formed around another star before ...

The SETI Institute is the latest to confirm what scientists have long suspected: the interstellar 3I/ATLAS comet is not an alien spaceship.

Observations of the fast-moving interstellar comet with the Very Large Telescope in Chile support similar observations made ...

Based on the composition of gases spewed by the icy space rock, researchers estimate that our guest might be up to 12 billion years old—about three times the age of the solar system ...

Observational evidence now suggests that the comet “3I/ATLAS,” known as the third interstellar object to visit our Solar ...

Researchers say 3I/ATLAS could be 12 billion years old and has a composition unlike anything in our solar system.

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 ...

I/ATLAS still has surprises in store: data from the James Webb Space Telescope suggests that the interstellar comet is even older than previously thought.