noun a mechanical model of the solar system or of just the sun, earth, and moon, used to represent their relative positions and motions
Orreries are commonly used in science classrooms to teach students about the solar system.
An orrery is a mechanical model of the solar system that shows the positions and motions of the planets and moons.
Orreries are sometimes featured in science fiction literature and films as futuristic or alien technology.
Orreries are used as educational tools to demonstrate planetary motion and celestial mechanics.
Orreries have a long history dating back to the 18th century when they were popular scientific instruments.
Orreries are often displayed in museums as examples of early scientific instruments.
In science fiction writing, an orrery may be used as a visual aid to explain planetary movements in a fictional universe.
Astronomers use orreries as educational tools to demonstrate the motion of planets in the solar system.
Museum curators may use orreries as part of their exhibits to showcase historical scientific instruments.