Blast off to the most fascinating places in our solar system You'll get to know the planets, moons, and rockets of outer space--and test your puzzle chops while you're at it. This activity book is brimming with out-of-this-world facts, awesome photos, and endless entertainment. (Where else can you learn about space exploration AND master a crossword puzzle--all in the same book?) Plus, all this fun is packed into a handy, portable size, perfect for tossing into a backpack or taking on the road.