The Galactic Armillary
This design of this armillary sphere was inspired by those of antiquity, but its content captures our modern understanding of the universe. Early armillaries, dating back to the second century AD, were used as tools to derive the coordinates of a star or planet on the sky. Later models, served as geocentric teaching aids, demonstrating the motion of celestial bodies as viewed from Earth.
This scupture, which instead places our Milky Way galaxy at the center, is positioned to demonstrate New York City's galactic address — its precise location — at the moment the Planetarium opened. Of the many rings, the one representing the plane of our galaxy is sectioned into octants as a symbolic guide for the future of space navigation.