TIME for Kids The BIG Book of Why： Space answers the why， what， when， where， who and how questions about earth and space that kids commonly ask， but adults can rarely answer. Why don't we fall off the planet? Why is the sky blue? Why are diamonds so rare? Why is the sun so bright? Where does our solar system end? Written in an upbeat manner， each answer is accompanied by either a photo or an illustration to show the reasons why. Of course， TIME For Kids goes beyond answering the question， and dips into the science or history to further explain the answer in an easy-to-follow， straightforward manner. TIME For Kids The BIG Book of Why： Space is a must-have book to satisfy the most curious of kids.