methane
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K2-18b
Roughly 124 light-years away in the Leo constellation lies K2-18b, a distant world first identified in 2015 through data from NASA’s Kepler Space Telescope. This exoplanet orbits a cool red dwarf star, K2-18, within its habitable zone, where conditions might… Continue reading
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The Search for Exoplanet Biosignatures
Oxygen (O₂) and Ozone (O₃): On Earth, oxygen is produced primarily by photosynthesis. A high level of oxygen in an exoplanet’s atmosphere, especially alongside methane, could indicate biological processes. Methane (CH₄): Methane is rapidly destroyed by ultraviolet radiation, so a… Continue reading
