orrery
or·rer·y / ˈôrərē/ • n. (pl. -rer·ies) a mechanical model of the solar system, or of just the sun, earth, and moon, used to represent their relative positions and motions.
orrery
orrery a clockwork model of the solar system, or of just the sun, earth, and moon. It is named after Charles Boyle (1676–1731), fourth Earl of Orrery, for whom a copy of the machine invented by George Graham c.1700 was made by the instrument-maker John Rowley.
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