NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. Before Voyager 1 flew by Io, scientists ...

NASA’s Juno spacecraft identifies over 40 enormous lava lakes on Io, shedding light on the extreme volcanism sculpting Jupiter’s moon.

The study, published in Science, indicates that for most of - or possibly all - its 4.57 billion years of existence, Io has been an angry world. As Jupiter's innermost large moon, it is subject to ...