I cut this from the blog, but it is a slightly outdated version. Nothing significant, just the current version reads a little easier.
MArk
It is pretty obvious that Io, Ganymede, Callisto, and Europa do not. It was Galileo's discovery of Jupiter's four largest moons that led to his rediscovery of the helio-centric theory.
You're quite the brave soul, posting something like this.
I believe it is the truth.