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New Research Reveals That Interstellar Comet 3I/ATLAS Formed in a System Far Colder Than Our Own

April 23, 2026
New Research Reveals That Interstellar Comet 3I/ATLAS Formed in a System Far Colder Than Our Own
By Matthew Williams (https://ift.tt/oSsFKOl)

This artist’s impression compares the semi-heavy water content of the interstellar comet 3I/ATLAS (left) and Earth (right). Credit: NSF/AUI/NSF NRAO/M.Weiss

The interplanetary comet 3I/ATLAS is remarkably rich in a specific type of water that contains deuterium, meaning it came from somewhere colder and with lower levels of radiation than our early Solar System.



April 24, 2026 at 04:51AM
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