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NASA's Webb detects methane and strange chemistry on interstellar comet 3I/ATLAS

NASA's James Webb Space Telescope has uncovered unusual chemistry in interstellar comet 3I/ATLAS, including the first direct detection of methane on a visitor from another star system. The comet also contains exceptionally high levels of carbon dioxide, making it unlike most come

NASA's Webb detects methane and strange chemistry on interstellar comet 3I/ATLAS
ScienceDaily โ€” 3 June 2026
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NASA's James Webb Space Telescope has uncovered unusual chemistry in interstellar comet 3I/ATLAS, including the first direct detection of methane on a visitor from another star system. The comet also contains exceptionally high levels of carbon dioxide, making it unlike most comets born in our solar system. Scientists believe the methane was hidden beneath the surface and only emerged after solar heating reached deeper icy layers.

This report comes from ScienceDaily. The story centres on NASA's Webb detects methane and strange chemistry on interstellar comet 3I/ATLAS. Full coverage and background context is available at the original source. Readers seeking more detail on this developing topic are encouraged to follow updates from ScienceDaily and related outlets covering this beat.

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