SolarSphere™ Interactive Space LearningPrecision Model with 9 Planets & 28 Moons The SolarSphere model of the solar system depicts the correct relative orbital speeds of the planets plus relative orbital movement of Earths moon. Historically, a SolarSphere showed only the "naked eye" planets out to Saturn, as they were developed in the early 18th century. Our model demonstrates 9 planets, including Pluto, and 28 moons. The Earth's moon system shows the compound motion of the moon's orbit
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