Do your friends think that you're a space cadet? Were you confused how Michael Jackson could do the Moonwalk without actually going there? These questions can be answered by Sporcle's many fun online astronomy quizzes. If you find yourself staring out at the starry sky regularly, maybe you should try our challenging constellation quiz. If you've always dreamed of being an astronaut, try starting with naming the planets by weight trivia, Or, if you're looking for some good 'ol planetary fun, try naming all the planets in order from the sun in the classic nine planets quiz or the more challenging solar system A-Z trivia. Regardless, you'll have fun at Sporcle playing online astronomy games no matter what the phase of the moon (unless you're a werewolf)!