The extraordinary 2,000-year-old computer that you've never heard of

[Dave Monroe]

The Antikythera mechanism was designed to predict movements of the
sun, moon and planets. Why isn't it better known?

http://www.guardian.co.uk/science/2012/jun/06/extraordinary-2000-year-old-computer

Cf., e.g., ...

Orrery

94; an apparatus showing the relative positions and motions of bodies
in the solar system by balls moved by wheelwork; 209; of Engagement,
536

http://www.thomaspynchon.com/mason-dixon/alpha/o.html