Orreries
type: Concept
contributor: AAS Frey.Katie Admin
modified: 2020-11-03T20:17:51.875Z
modified: 2020-11-03T20:17:37.408Z
alternative label: Orrery
broader: Early astronomical instruments
definition: A mechanical device that illustrates the relative positions and motions of the planets and moons in the solar system in heliocentric model.

Early astronomical instruments
type: Concept
narrower: Orreries