A final page offers a few simple moon-related projects and a few related websites for further information. The bulk of the book focuses on large distances and how they're measured and how people used to believe that the earth was at the center of the universe and remained motionless. The final page explains the big bang theory. Nobody knows for sure, but here is what most scientists of today think. Young children don't have much trouble with this when presented as it is in this book.
Chances are, they'll know the answer.
Black and white sketches illustrate each experiment as well. Although most books in the DK Eyewitness series are at least slightly problematic in the text, our family enjoys a number of them entirely for the sake of the pictures. Although there are many beautiful photos, the book overall is both disappointing and even problematic in places. We've started working our way through parts of this book as a read-aloud for younger children but have enjoyed it especially for the pictures. It covers everything from the Hubble Space Telescope to the surface and atmosphere of the Sun, Moon and Planets, from Space Pioneers to star maps, from explanations of various types of telescopes to black holes and discussions of the possibility of extraterrestrial life.