Historic Atwood Sphere
What You Will Discover
Included With All Access Pass
Experience the night sky over Chicago as it appeared in 1913 in the Atwood Sphere – Chicago’s oldest planetarium. Although the star positions have not changed since then, we can see only a small percentage of these stars in our current night sky due to light pollution. The sphere is seventeen feet in diameter and has 692 holes drilled through its metal surface. These holes allow light to enter and show the positions of the brightest stars in the night sky.
Take a live guided tour of the Atwood Sphere and identify stars and the constellations they form.
Atwood Sphere Experience tickets can be added on to the cost of General Admission or a Basic Pass for an additional $5.
*Please note that the Atwood Sphere Experience will be closed for maintenance on Tuesdays beginning November 1, 2016.
Exceptions to these dates will be the following Tuesdays:
December 27, 2016
January 3, March 28, April 4, April 11 and April 18, 2017