The ""How and Why"" series concerns itself once again with outer space. This time our subject is rockets and rockets which send up ""moons"". Twenty topical explanations are offered in a 36 page book among which are, The First Discovery of Satellites Made. Making Electricity From the Sun, Hitting and Rounding the Moon. The First Man-Made Moons. Each explanatory paragraph is graphically illustrated with bright color and clear line diagrams or pictures admirably enhancing comprehension. Jet age enthusiasts will find valuable information herein.