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December 27, 2016

Sunset at Cerro Tololo Inter-American Observatory

As the sun sets, the domes of the Cerro Tololo Inter-American Observatory in Chile open their shutters in preparation for a night of observing. (Date image taken: 2007; date originally posted to NSF Multimedia Gallery: Dec. 27, 2016)

Credit: T. Abbott; NOAO/AURA/NSF

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