Quiet Seafloors Dampen Habitability

A peer‑reviewed geophysical model suggests some ocean worlds (Europa specifically) may lack sufficient seafloor tectonic and hydrothermal activity to supply the chemical energy life needs, even when liquid water is abundant. If correct, the finding downgrades the likelihood of life on Europa and reorients where space agencies should prioritize landed life‑detection missions. — This reframes planetary life‑search strategy—from simply 'find water' to requiring demonstrable energy flux—and will influence mission design, budget priorities, planetary‑protection rules, and public expectations about finding extraterrestrial life.