Jupiter's Moon IO by Zang Grey
With hundreds volcanoes it is every exogeologist's fascination.
Io is the most volcanically active moon in the solar system.
Why? Its orbit creates tidal forces that convert to geothermal energy.
This moon is almost as dangerous to satellites, as its cheese covered facsimile the
Domino Pizza's “30 minutes or its free policy” was to pedestrians.
IO's radiation destroyed most of the Galileo’s spacecraft systems.
IO has also been used to measure the speed of light as far back in history
Basically when Jupiter is farther away from earth the time of IO eclipse of
Jupiter is delayed by up to ten minutes.
The extra time light takes to reach us.