How a Navigation Image Revealed Io's Volcanic Secrets in 1979

In March 1979, a navigation engineer at JPL named Linda Morabito was searching for stars in a routine photograph when she found something far stranger — a towering volcanic plume rising from Io, a moon of Jupiter that science had assumed was cold and dead. Her accidental discovery, arriving just days after a theoretical paper had predicted exactly such volcanism through gravitational friction, confirmed that worlds need not be large to burn from within. The implications have since traveled far beyond Io, reshaping how humanity imagines the possibility of life in the frozen outer reaches of the