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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More of a moustache than a beard?
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It’s time for the Calgary Stampede!
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Megalong Valley, Blue Mountains National Park, NSW, Australia
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2026 Winter Olympics
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Bangkok, Thailand
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Moon Day
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World Migratory Bird Day
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A public restroom or a tourist spot?
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Buckets on maple trees collecting sap for maple syrup
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Lest we forget
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The buffet is open
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World Space Week
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Boxing Day
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Happy Diwali!
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Aerial view of Plaza Mayor, Madrid, Spain
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Red deer, Canada
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Groundhog Day
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Skipper butterfly on an Echinacea flower
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Walruses in Svalbard, Norway
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A glimpse of Yoho National Park
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Telašćica Nature Park, Dugi Otok, Croatia
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Paddle power
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Tufa formation on Mono Lake, California, United States
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World Otter Day
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Mid-Autumn Festival
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Wind-powered ice racing
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Colosseum, Rome, Italy
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Holiday hues
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Schönbrunn Palace Park, Vienna, Austria
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Fallow deer, Bradgate Park, Leicestershire, England
Bing Wallpaper Gallery

