A tabletop exhibit
Brass Orrery
Six enamels under glass, geared for the long room and set upon the walnut desk.
The Habitation
Earth
Three hundred and sixty-five days, geared with a discretion the moon does not enjoy.
Curator: sea-green enamel, ground from the same lot as the library clock.
Tempo of the cage
Draw a finger across the glass to turn the cage. It will coast, then settle.
The gears rest, as you prefer. The plaques may still be read.
Mercury, Venus, Earth, Mars, Jupiter, and Saturn turn on their own periods. Choose a planet to read its plaque. Drag horizontally to turn the whole cage.