Universe

Facts101 is your complete guide to Universe. In this book, you will learn topics such as Eclipses and the Motion of the Moon, Gravitation and the Waltz of the Planets, The Nature of Light, and Optics and Telescopes plus much more. With key features such as key terms, people and places, Facts101 gives you all the information you need to prepare for your next exam. Our practice tests are specific to the textbook and we have designed tools to make the most of your limited study time.