![Works change a street light in the dark sky community of Prestegne, Wales.](https://darksky.org/app/uploads/2024/01/8-Lighting-Tests-1440x700.jpg)
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![The Mackinac Bridge at twilight with colored lights that are reflecting in the water.](https://darksky.org/app/uploads/2015/08/Mackinac_Bridge.jpg)
How to Do Your Own Lights Out Challenge
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![People sitting on the lawn lookin gup at a starry night sky at the Newport State Park during its Perseid meteor showers event.](https://darksky.org/app/uploads/2015/08/NewportSP_gathering_Denny-Moutray-copy.jpg)
Death of Dark Sky Advocate is Loss to Dark Skies Movement
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![](https://darksky.org/app/uploads/2015/08/Westcliffe_night_sim_72dpi.png)
How To Start A Local Dark Skies Group
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![Logo for Lights Out challenge.](https://darksky.org/app/uploads/2015/08/Lights_Out2.jpg)
May the Darkest Towns Win!
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![One Coin two Sides-Impacts of Light Pollution to Fish and Wildlife Resources and the Mitigating Role of Emerging Lighting Technologies](https://darksky.org/app/uploads/2015/07/AGM-2015.jpg)
The IDA 2015 Annual General Meeting
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![](https://darksky.org/app/uploads/2015/04/big-bend-featured-700px-460px.png)
Chasing Cosmic Light In Dark Sky Parks And Reserves
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Much of our world is now awash in artificial light at night, the result of more than a century …