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
More Desktop Wallpapers:
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Crescent-tail bigeye fish, Great Barrier Reef, Australia
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A species worth defending
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Skógafoss waterfall, Iceland
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Joshua Tree National Park
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National Cherry Blossom Festival, Washington, DC
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Polar bear cubs playing in Svalbard, Norway
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Hey, you two in the front!
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Let’s go foraging
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International Literacy Day
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Humpbacks return to the Inside Passage
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Sequential images of a total solar eclipse
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Ski touring in Austria
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Unbearable cuteness
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Gauchos showcase Argentina’s independent spirit
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An octagonal architectural treasure
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Vermilion Cliffs National Monument
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Winding road of Julier Pass, Switzerland
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Palouse farmland, Washington state
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Great Salt Lake Shorelands Preserve in Layton, Utah
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Westerheversand Lighthouse
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A house of grand scale(s)
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A circular celebration
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Bonaventure Cemetery, Savannah, Georgia
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Mount Hood, Oregon
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Best fronds forever
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Earth Day
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Arches National Park, Utah
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World Turtle Day
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A lush, green escape
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Reflections on Memorial Day
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