"Did you know that the moon we see in the sky is not the only one out there? Other planets have moons, too--Saturn has 82! And did you know the weather is always stormy on Jupiter? Or what about that Venus has a bunch of volcanoes? Beyond our solar system, did you know that there are even more planets, called exoplanets? Scientists are finding more every year! Discover . . . facts about planets and moons"--Provided by publisher.