The search for exoplanet biosignatures is guided by whether planetary environments can sustain photosynthesis.
Photosynthetic Habitable Zone
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Habitable Zones, Plant Biology, Status Report
A New Definition of Exoplanet Habitability: Introducing the Photosynthetic Habitable Zone
It may be possible to detect biosignatures of photosynthesis in an exoplanet’s atmosphere. However, such a detection would likely require a dedicated study, occupying a large amount of telescope time.