"Lights Out: Recovering Our Night Sky," an exhibit at the National Museum of Natural History, explores the impact of light pollution on different organisms.(Avalon.red/AlamyStock Photo)One of the darkest places in daytime Washington at the moment is a tribute to the night sky.The notably low-lit exhibition "Lights Out: Recovering Our Night Sky" is the National Museum of Natural History's effort to illustrate what's been lost as artificial illumination bleaches out the heavens.
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