James Webb Just Detects a Planet with 99.8% Chance Of Life

JWST spotted a hydrogen-rich atmosphere on K2-18b (120 ly, Leo) with H₂O, CH₄, CO₂—and a tentative dimethyl sulfide signal.
Climate models point to ~49 °C global equilibrium, deep oceans, and temperate aerial layers—habitability beyond Earth-like rules.
We break down transit spectroscopy, chemical disequilibrium, and why low ammonia matters—evidence first, awe second.
What this means for red-dwarf systems (¾ of the galaxy), the Drake equation, and lessons for Earth’s climate balance.
Next steps: Roman, Ariel, ELT and future starshade missions to verify biosignatures—subscribe to follow the search.