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3I/ATLAS's Coma Is Largely Carbon Dioxide

All (or at least most) astronomical eyes are on 3I/ATLAS, our most recent interstellar visitor that was discovered in early July. Given its relatively short observational window in our solar system, and especially its impending perihelion in October, a lot of observational power has been directed towards it. That includes the most powerful space telescope of them all - and a recent paper pre-printed on arXiv describes what the James Webb Space Telescope (JWST) discovered in the comet’s coma. It wasn’t like any other it had seen before.

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