NASA’s Juno Takes Temperature of Jupiter’s Fiery Moon Io

NASA's Juno spacecraft has successfully obtained unprecedented thermal readings beneath the surface of Jupiter’s volcanic moon, Io. The mission achieved this milestone through detailed observations gathered during two recent orbital passes around the planet. Scientists discovered substantial heat concentrated within Io’s relatively thin subsurface layer, indicating ongoing geological activity. This marks the first time scientists have directly measured temperatures below Io’s surface. Furthermore, analysis of the surface revealed a predominantly smooth composition across much of Io’s terrain, suggesting widespread resurfacing processes driven by intense volcanism.