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NASA study finds interstellar comet 3I/ATLAS may contain 10-billion-year-old material

NASA team publishes analysis in Nature Astronomy

1 Oct 31 · 8d ago · 1 article · 1 source · development 1 of 2

Researchers led by NASA Solar System Exploration Division scientists published their findings on the comet's deuterium-to-hydrogen ratio in methane, finding it significantly higher than any Solar System body—13 times more than the only other local comet with secure measurements.

NASA team publishes analysis in Nature Astronomy
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“The elevated D/H ratio for methane in 3I/ATLAS is consistent with the hypothesis that its ices formed in a cold, low-metallicity interstellar or protostellar environment under a high cosmic ray irradiation rate.”

NASA research team

NASA Solar System Exploration Division Research team leadJames Webb Space Telescope Observational instrument

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1–2NASA team publishes analysis in Nature…
Nov 1Nov 2Nov 3Nov 4Nov 5Nov 6yesterdaynow · 9:14 AM ET

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