IVO

Io Volcano Observer (IVO) is a robotic space exploration mission concept that, if approved and launched, would orbit Jupiter and perform at least nine flybys of Jupiter's moon Io. IVO is a low-cost, outer-planet mission that would explore Io's active volcanism and impact on the Jupiter system as a whole by measuring its global heat flow, its induced magnetic field, the temperature of its lava, and the composition of its atmosphere, volcanic plumes, and lavas.

IVO Fact Sheet (pdf)