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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International Day for the Conservation of the Mangrove Ecosystem
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2026 Winter Olympics
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Peek-a-boo, I see you!
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World Heritage Day
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Mid-Autumn Festival
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Yellowstone National Park, Wyoming, USA
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Ride the wave
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Aerial view of land and ocean, Victoria, Australia
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Nimble and stealthy
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Venice Skatepark, Los Angeles, California
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Bangkok, Thailand
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Humpback whales, Monterey Bay, California, United States
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Coral Reef Awareness Week
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Where is this historical bridge?
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Greater flamingos, Lüderitz, Namibia
Bing Wallpaper Gallery

