A Science analysis of a four-billion-year-old Martian meteorite—one of the oldest known rocks from the planet—reveals that organic molecules on Mars’ ancient surface, the origin of which have been a question, were formed by abiotic synthesis. Read more:
We thank A. Treiman, C. Boschi, and three anonymous reviewers for helpful comments during the preparation of this manuscript. We also thank the Meteorite Working Group, now the Antarctic Meteorite Review Panel of the Astromaterials Allocation Review Board, for carefully evaluating our sample requests and the curatorial staff at NASA Johnson Space Center for allocation of the ALH 84001 samples used in this study.
The main mass of ALH 84001 is stored at NASA Johnson Space Center, which makes samples available for research via
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