Armillary Sphere - Navo

• An Armillary sphere is a globe made of movable, concentric rings that depict such things as a horizon.
• The first sphere was created in 1543 by a German mathematician.
• Later someone else created a sphere instead of earth in it they put a sun in the center.
• Now, in modern days the sun isn't there in the center, the earth is.
• The earliest know sphere that was half built was tributed to the Greeks in the early second century of A.D.