Io has been studied by the the Pioneer and Voyager probes in the 1970s and the Galileo spacecraft in the 1990s, but only now with Juno we can finally have such detailed images of the surface.
Io has been studied by the the Pioneer and Voyager probes in the 1970s and the Galileo spacecraft in the 1990s, but only now with Juno we can finally have such...