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.
"Sinopsis" puede pertenecer a otra edición de este libro.
With the help of an adventurous scientist and his fun-loving dog, readers can find out about the mysterious force called gravity that makes things fall from the sky and keeps the moon rotating around the Earth. Simultaneous.
"Sobre este título" puede pertenecer a otra edición de este libro.
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