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Nature Geoscience 2, 8–9 (1 January 2009) | doi:10.1038/ngeo400
Astrobiology: Impacts and origins of life
Abstract
The chemical evolution of cellular life on early Earth from a mixture of water, carbon and nitrogen is shrouded in mystery. In the 1950s, formation in the atmosphere of molecules that can serve as precursors to life was illustrated in a remarkable experiment by Stanley Miller, who obtained five amino acids by exposing a gaseous mixture of methane, ammonia, hydrogen and water to electric discharges.
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