The Milky Way

"They take a story-style approach to each subject: rather than cramming pages with disconnected facts, there are a couple of simple sentences on left-hand pages and one very large, well-chosen photo on the facing page. . . .I think the best book in the series is NASA; it does a good job of explaining how the U.S. explores space, why we send robots to some places and humans to others, and so on."