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1 revisions for "An Alien Snowball 12 Billion Years Old: What Webb's Chemical Portrait of Comet 3I/ATLAS Tells Us About the Galaxy"

#1
Anonymous11 days ago

NASA's James Webb Space Telescope has captured the first mid-infrared chemical fingerprint of interstellar comet 3I/ATLAS, detecting methane and revealing carbon dioxide-to-water ratios far exceeding any known solar system comet. The data — combined with extreme deuterium enrichment and anomalous carbon isotope ratios — suggest the object formed in a frigid, chemically distinct planetary system up to 12 billion years ago, raising new questions about the diversity of planetary formation environments across the Milky Way.

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