Satellites
Rebecca L. Johnson
Library Binding
(Lerner Pub Group, May 16, 2005)
Thousands of satellites circle Earth. Some look down, taking pictures and gathering all sorts of information about our planet. Others look out into space, toward the planets, the Sun, and the unknown worlds beyond our galaxy. In addition to recording what is seen, satellites relay information that make it possible to use phones, watch TV, predict the weather, and much more.
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