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!
Table of Contents Jupiter Has 67 Moons (4 Big Ones) 0:12 Ganymede is the Largest 1:15 Io is Riddled With Volcanoes 3:16 Europa Has an Undersurface Ocean 4:48 Io, Europa, and Ganymede Interact Gravitationally 3:48 Known Unknowns 8:06
In this Crash Course series, marvel at the wonders of astronomy with your host for this intergalactic adventure, the Bad Astronomer himself -- Phil Plait. In just 40 short lessons, you will learn the basics of the oldest science known to humanity.
Be sure to check out links to relevant Photos in the description for each video.