Complex sentence: A dedicated mission to Io, called the "Io Volcano Observer" ("IVO"), has been proposed for the Discovery Program mission 13 as a Jupiter orbiter that would perform at least nine flybys of Io.
Split into simpler sentences: A dedicated mission to Io, called the "Io Volcano Observer" ("IVO"), has been proposed for the Discovery Program mission 13. It is proposed as a Jupiter orbiter that would perform at least nine flybys of Io.