Contextual Biosignatures in Exoplanet Atmospheres: A Chemistry–Planetary Physics Framework
To the point
Seager and Bains argue that signs of life on distant worlds come from a mix of atmospheric gases and planetary context, not a single gas, and that we should consider many possible biosignatures, how they form, and how they interact with the planet’s environment while using different observation methods, with detections being probabilistic and dependent on accessible data and contexts.
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