Jupiter's Rings and Moons
Jupiter has multitudinous moons. Scientists have studied Jupiter and figured out that there are only 64 known moons, but they believe there are innumerable moons left that they haven't yet discovered. Jupiter is a weird planet when it comes rings because it has 4 rings that always appear and plenty of rings that appear at certain types of the year and some that don't appear. The moon Europa has a thin ice top layer which scientists believe that there could be life.
Terraforming
Terraforming is the belief that scientists conduct research on that they believe that there is life on a certain substance such as a planet, comet or a moon. Scientists have conducted research that under Europe, it has a deep ocean beneath its icy crust which is the best place where scientists believe there is life in the Solar System.