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Atwood Sphere
Saturday March 3, 2007
Adler Planetarium and Astronomy Museum
1300 S Lake Shore Dr
Chicago, Illinois 60605 Get Directions
'Atwood Sphere,' Chicago's oldest planetarium, was constructed in 1913. The sphere is 15 feet in diameter with 692 holes drilled through its metal surface, allowing light to enter and show the positions of the brightest stars in the night sky.
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Adler Planetarium and Astronomy Museum


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