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The Earth and Moon orbit the BarycenterThe Moon not only orbits the Earth. The Earth also orbits the Moon. The Earth and Moon orbit the barycenter of the Earth / Moon system.
The simulation Barycenter.gsim shows the Earth / Moon system orbiting their common barycenter. The Earth, being more massive thanthe Moon barely wobbles. The barycenter is located just beneath the surface of the Earth.
Download barycenter.gsim
(You need to have the program Gravity Simulator installed on your computer first. Click Here to download Gravity Simulator.)
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