Greetings! Today I want you to think about Jupiter. It’s such a large planet; we can barely comprehend its size. It is the second largest known object in our solar system–the only thing bigger in size and mass is the sun! But what I really want to talk about are the moons of Jupiter. Think about how alien, how different the landscape is compared to that of our single moon. Now Jupiter, he’s got 67 different moons! Granted, a majority of them are just asteroids captured in its orbit. But the main point I want to discuss, are the four big moons of Jupiter. They are referred to as the “Galilean” moons: Io, Europa, Ganymede, Callisto.