Gravity Is a Mystery (Let's-Read-and-Find-Out Science 2)

What goes up must come down.

Everybody knows that. But what is it that pulls everything from rocks to rockets toward the center of the earth? It's gravity. Nobody can say exactly what it is, but gravity is there, pulling on everything, all the time. With the help of an adventurous scientist and his fun-loving dog, you can read and find out about this mysterious force.

• Forces Make Things Move (Let's-Read-and-Find-Out Science 2)
• Simple Machines (Let's-Read-and-Find-Out Science 2)
• Energy Makes Things Happen (Rise and Shine) (Let's-Read-and-Find-Out Science 2)
• Motion: Push and Pull, Fast and Slow (Amazing Science)
• Move It!: Motion, Forces and You (Primary Physical Science)
• What Makes a Magnet? (Let's-Read-and-Find-Out Science 2)
• The Planets in Our Solar System (Let's-Read-and-Find-Out Science 2)
• Newton and Me (Arbordale Collection)
• What Is the World Made Of?: All About Solids, Liquids, and Gases (Let's-Read-and-Find-Out Science 2)
• Sunshine Makes the Seasons (Let's-Read-and-Find-Out Science 2)