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The chemical basis for life can form in interstellar ice
The molecules involved in a chemical process that is essential for cell function and the appearance of life on Earth (also known as the Krebs cycle ) can form in interstellar ice. This discovery has just expanded the inventory of prebiotic molecules that can form in space, and marks a new stage in research on signs of life in the Universe. CNRS scientists and their colleagues in Hawaii obtained these results by recreating interstellar ice in the laboratory, and by studying it under conditions as close to real as possible using an unprecedented combination of infrared spectroscopic and chromatographic techniques. The study will be published on 21 April in the journal Proceedings of the National Academy of Sciences.
The James Webb telescope detected interstellar ice there, which could be the origin of stars and planets. The study shows that this ice was apparently also behind the formation of organic molecules, including all intermediaries in the Krebs cycle. McAnally et al., Proceedings of the National Academy of Sciences, le 21 avril 2025.
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