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NASA’s SPHEREx Examines Comet 3I/ATLAS’s Coma

4 Feb 2026, 16:18 GMT By Rafael Alanis
NASA’s SPHEREx Examines Comet 3I/ATLAS’s Coma
Credit: Rafael Alanis

Description These observations by NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) show the infrared light emitted by the dust, water, organic molecules, and carbon dioxide contained within comet 3I/ATLAS’s coma. The comet brightened significantly during the December 2025 period when SPHEREx made the observations — about two […] The post NASA’s SPHEREx Examines Comet 3I/ATLAS’s Coma appeared first on NASA Science .