LRI4632465: Planetarium (planetarium) astronomical instrument representing the solar system and the movement of its main planets known in the 18th century. Mercury, Venus, Earth and Moon can move through the action of a crank. Mars, Jupiter and Saturn are fixed. Developed by George Adams the Old. 1750 Cambridge, Whipple Museum, United Kingdom, Adams, George the Elder (c.1709-1773) / Bridgeman Images