October 2, 1992: NASA's Hubble Space Telescope (HST) is allowing several teams of astronomers to
explore Io [EYE-oh] at a level of detail not possible since a pair of Voyager spacecraft
flew by the small moon 13 years ago.
HST/FOC images: Francesco Paresce (ESAI STScI)
Paola Sartoretti, University of Padova
Voyager Image: NASA