When the lights go down, the universe puts on a show. International Dark Sky Week, celebrated each April, invites everyone to rediscover the night and learn why darkness is worth protecting. Launched in 2003, the week highlights how excessive artificial light affects wildlife, human health, energy use and our ability to see the stars. Fewer lights don"t mean less safety—smart, well-designed lighting can do both.
International Dark Sky Week
Today in History
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Medieval towers in Mestia, Upper Svaneti, Georgia
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World Bicycle Day
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South Downs Dark Skies Festival
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Cosmic cliffs
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‘Night shining’ clouds
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Cades Cove, Great Smoky Mountains National Park, Tennessee, USA
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International Mountain Day
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Waterfall capital of the world?
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Christmas Bird Count turns 125
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Sea otter
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Stealthy pollinators
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Capitol Reef National Park, Utah, USA
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International Polar Bear Day
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Reflecting on Christmas
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Bukhansan National Park, South Korea
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Solo on the savanna
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Finnish Independence Day
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Wintry Swiss bliss
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International Day for the Conservation of the Mangrove Ecosystem
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Boardwalk over Balkan lakes
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Mount Assiniboine Provincial Park, British Columbia, Canada
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Check out these ‘sea cows’
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Happy Cinco de Mayo!
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Keyholes to the kingdom
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The Monastery of Roussanou, Greece
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How sweet to be a star, floating in the blue.
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Winter wonderland
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A young bull moose, Denali National Park, Alaska, United States
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Male hooded merganser, Oregon, United States
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Mekong River Delta, Long An, Vietnam
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