Visions of Ancient Night Sky Were Hiding in Plain Sight for Centuries: “The sculpture offers hints that it may have serious scientific underpinnings. The globe has horizontal lines for the Equator, the Tropics of Cancer and Capricorn, and the Arctic and Antarctic Circles. An angled circle marks the ecliptic, the plane defined by the orbits of the planets, and vertical lines mark colures, the equivalent of lines of longitude on a map of the Earth.”