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Loading contentThe study of how life began — the chemistry that turned simple molecules into self-replicating systems on the early Earth, and whether the same steps could happen elsewhere. A question that frames the entire search for life beyond Earth.
How life arises from chemistry.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.