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NASA discovers traces of water on ancient interstellar comet 3I/ATLAS

2025-11-03 17:53:00, Tech CNA

NASA discovers traces of water on ancient interstellar comet 3I/ATLAS

NASA's Swift Observatory's Neil Gehrels just spotted something extraordinary: water vapor flowing from an interstellar comet called 3I/ATLAS.

Comet 3I/ATLAS, this ancient space 'wanderer' came from another star system, making it only the third interstellar comet we've ever discovered.

She went on a space flight in July 2025, and once she leaves our Solar System, she disappears forever, no return visits.

This makes it approximately twice as old as the Earth itself, and the oldest comet that humanity has ever seen.

It's essentially an intact time capsule from a distant planetary system, so astronomers have been trying to study it before it disappears into the cosmic void. /CNA 





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