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Universe Today • Andy Tomaswick

JWST finds record deuterium-rich methane in interstellar comet 3I/ATLAS

NASA’s James Webb Space Telescope detected the most deuterium-rich methane measured in the Solar System in 3I/ATLAS, the third known interstellar object. The finding suggests the comet’s ices formed in a cold, distant, low-metallicity environment, offering clues to the conditions where material around other stars originated.

2026-11-05T07:15:40.151873-08:00