This map shows thermal emission from erupting volcanoes on Io. The larger the spot, the larger the thermal emission.
Credit: NASA/JPL-Caltech/Bear Fight Institute
“This five-frame sequence taken by NASA’s New Horizons spacecraft on March 1, 2007 captures the giant plume from Io’s Tvashtar volcano.”
Ping. Perhaps Io is ready for a massive discharge.
Of course Juno would turn an unfriendly gaze on Io. Juno is Jupiter’s legal wife, while Io is just a heifer claiming to have had a one-night stand with Jupiter. Never believe a heifer when there is money involved.