Astrophysics (index)

Abiotic Oxygen

(oxygen from non-life sources)

Abiotic Oxygen is oxygen from non-biological sources. Oxygen is considered a Biosignature, but there are some chemical processes that can generate oxygen gas without the presence of living organisms, e.g., chemical reactions that break down water. When Exoplanet Atmospheres are analyzed and oxygen is detected, the planet and atmosphere's composition and Temperature may suggest the oxygen could be, or is likely to be abiotic.


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