A monosaccharide sugar has been detected in an interstellar cloud: the chiral ketose erythrulose. Observations and chemical modelling show that it forms efficiently on dust grains, supporting an interstellar origin for prebiotic sugars linked to early life.
McGuire, B. A. 2021 census of interstellar, circumstellar, extragalactic, protoplanetary disk, and exoplanetary molecules. Astrophys. J. Supp. Series259, 30 (2022).
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