3I/ATLAS Rich In Carbon Dioxide

By Matt Innes | August 29, 2025

NASA’s James Webb Space Telescope (JWST) has made its first observations of interstellar object 3I/ATLAS, revealing the comet contains an unusually high level of carbon dioxide. Initial observations of 3I/ATLAS by JWST suggest it has one of the highest ratios of carbon dioxide (CO2) to water (H2O) ever recorded in a comet. These first observations…

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