http://home.dtm.ciw.edu/users/sheppard/satellites/jupsatdata.html http://home.dtm.ciw.edu/users/sheppard/satellites/jupsatdata... Having a quick look at the da

http://home.dtm.ciw.edu/users/sheppard/satellites/jupsatdata.html http://home.dtm.ciw.edu/users/sheppard/satellites/jupsatdata... Having a quick look at the data shows the inner moons travel in prograde, while the outer ones travel in retrograde. So although there may still be collisions in the future, unfortunately it looks like most of the collisions happened long long ago.