![](https://image.tmdb.org/t/p/w185/uqjGYej5fg1hxxirEnbX4HG7fa5.jpg)
3.574 Views
Before moving on from Jupiter to Saturn, we’re going to linger for a moment on Jupiter’s moons. There are 67 known moons, and 4 huge ones that we want to explore in greater detail. Ganymede is the largest - larger, in fact, than any other moon in the solar system and the planet Mercury! Callisto, orbiting the farthest out, is smaller but quite similar to Ganymede in many ways. Io, meanwhile, is most noteworthy for its tremendous volcanic activity. There’s also water on Ganymede and Europa!
First Air Date : Jan 15, 2015
Last Air date : Dec 24, 2015
Episode : 46 Episode
Season : 1 Season
Runtime: 12:14 minutes
Studio: YouTube
Country:
Cast: Phil Plait
Crew: Phil Plait (Writer)