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Some volatiles chemistry reported in this ApJL submission on ArXiv https://arxiv.org/abs/2601.22034
Includes the first direct detection of methane in an interstellar object.
…and paper on “Nucleus and Postperihelion Activity of Interstellar Object 3I/ATLAS Observed by Hubble Space Telescope” claims to be the first detection of the nucleus: https://arxiv.org/abs/2601.21569
It doesn’t say where submitted but one of the authors is David Jewitt.
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