Jupiter’s moon Io is covered in hundreds of volcanoes, which spew fountains of lava that constantly refill impact craters on its surface with scorching molten lakes. A recent discovery of extreme volcanic activity on the Jovian moon tops any eruption previously detected on Io, proving that this chaotic world knows no bounds. “This is the most powerful volcanic event ever recorded on the most volcanic world in our solar system—so that’s really saying something,” Scott Bolton, a researcher at the Southwest Research Institute in San Antonio and principal investigator of the Juno mission, said in a statement. The spacecraft’s extended mission, which began in 2021, has allowed scientists to study Jupiter’s moons Io, Europa, Ganymede, and Callisto. “While it is always great to witness events that rewrite the record books, this new hot spot can potentially do much more,” Bolton said.