Io Unleashes Solar System’s Most Powerful Volcanic Outburst, NASA Finds

NASA’s Juno spacecraft detected the solar system’s most energetic eruption on Io—a 40,000-square-mile hotspot in the moon’s southern hemisphere emitting well over 80 trillion watts from multiple simultaneous sources, suggesting a vast interconnected magma system; observed by JIRAM during the December 27, 2024 flyby with visible surface changes near Io’s south pole, and researchers plan a March 3 flyby recheck.