The interstellar object 3I/ATLAS has a CO2/H2O coma ratio of 7.6, about 18 times higher than the trend for Solar System comets at similar heliocentric distances.
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JWST detection of a carbon dioxide dominated gas coma surrounding interstellar object 3I/ATLAS
The interstellar object 3I/ATLAS has a CO2/H2O coma ratio of 7.6, about 18 times higher than the trend for Solar System comets at similar heliocentric distances.