LIBROS DEL AUTOR: rebecca mar woodbury ph d

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  • Earth in Space
    Rebecca Mar Woodbury Ph.D.
    Earth is a planet because it is an object in space big enough to have its own gravity, is spherical, and moves around a sun. Earth moves in an almost circular orbit around the Sun. It also rotates around an axis, an imaginary line that goes through its center. Earth’s rotation around its axis causes day and night, with one day being one full rotation of Earth. Earth’s axis is t...
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