An orrery is a mechanical device that illustrates the relative positions and motions of the planets and moons in the Solar System in a heliocentric model. Though the Greeks had working planetaria, the first orrery that was a planetarium of the modern era was produced in 1704, and one was presented to the Earl of Orrery — whence came the name. They are typically driven by a clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.

Read more about Orrery:  History, Explanation, Projection Orreries, Notable Orreries, In Popular Media

Other articles related to "orrery":

Stability Of The Solar System - Studies - Digital Orrery
... Another project involved constructing the Digital Orrery by Gerry Sussman and his MIT group in 1988 ... In 1988, Sussman and Wisdom found data using the Orrery which revealed that Pluto's orbit shows signs of chaos, due in part to its peculiar resonance with Neptune ...
The Space Place - Locations - Orrery
... There is an antique model of the planets in another corner of the gallery which may be visited by the characters over the course of the series ... The orrery is of brass construction and the planets and their moons rotate within it ...
Orrery - In Popular Media
... An orrery appears in Aughra's observatory in The Dark Crystal ... An orrery is used to determine when total eclipses occur in Pitch Black ... The Orrery is an artificial construct consisting of life-sized planets and a sun in Green Lantern New Guardians ...
Peter Perez Burdett - Biography
... In about 1766 Wright painted A Philosopher Giving that Lecture on the Orrery, in which a Lamp is put in place of the Sun (sometimes called simply The Orrery) ... place of the sun—illuminating the faces of the orrery and the faces of the audience ...
Eise Eisinga - Orrery
... holds that Eisinga decided to build an orrery in his living room to prove that there was no reason for panic ... this planet on the ceiling of his living room, where the orrery was located ... The construction of the orrery saved Eijsinga a lot of time, however, because he no longer needed to calculate the planets' respective positions by hand ...

Famous quotes containing the word orrery:

    Word of gloom from the war, one day;
    Johnston pressed at the front, they say.
    Little Giffen was up and away;
    A tear—his first—as he bade good-by,
    Dimmed the glint of his steel-blue eye.
    “I’ll write, if spared!” There was news of the fight;
    But none of Giffen.—He did not write.
    —Francis Orrery Ticknor (1822–1874)