and more teeth it’s not just the gears that go into this one. You’re also going to needs the orbs themselves. We have fond (perhaps scary) memories of the first time we saw an Orrery as a part ...

mechanical contraptions that illustrate the positions of all planets and the way they move over time through complex gear systems. [Illusionmanager] continues the orrery tradition but uses a ...

The pair are finishing the monumental task of reassembling the object — the Grand Orrery — after studying each of its pieces in a disassembled form. The process is almost complete. Harvard ...

Functionally, the Antikythera Mechanism is a type of orrery, a mechanical model of the ... The device once contained a complex system of gears that modeled both the five planets known to antiquity ...

The orrery is a kind of planetarium that models ... one of the planets whose orbit lies between Earth and the sun. The gears and chains that allow the arms to move are visible, and the base ...

The orrery, a moving model of the solar system, is 16.4ft (5m) in diameter. It was designed with 52 brass gears so planets orbit around the sun at exactly the right rate in relation to one another.