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The International Dark-Sky Association works to protect the night skies for present and future generations.

Recent News

You Can Make Twice the Difference!


Here’s Your Chance to Make Twice the Difference Protecting Night Skies! We have great news! Several of IDA’s committed donors have generously combined their resources to match, dollar for dollar, every gift we receive until July 31 … up […] Read More

IDA Dark Sky Places Photo Contest is Now Open

IDA Dark Sky Places Photo Contest is Now Open Image

The 2017 International Dark-Sky Association Calendar Contest is now open for submissions! This year we’re looking for stunning night sky images from IDA-designated International Dark Sky Places (click here for an interactive map to see where IDA-designated Dark […] Read More

Eyes In The Sky: Exploring Global Light Pollution With Satellite Maps

Eyes In The Sky: Exploring Global Light Pollution With Satellite Maps Image

Billions of people around the world routinely experience light pollution in the form of skyglow, the ever-present “haze” of light over cities at night. It comes from light on the ground scattering in the atmosphere […] Read More

Grad Student Helps Acadia with Dark Sky Bid

Three people sit looking over the water at Acadia National Park. The night sky is filled with star and you can see a hint of he Milky Way.

Guest post by Locher Grove It’s not easy to find dark skies along the East Coast of the continental United States.  Development and expansion have increased light pollution along the seaboard, disrupting ecosystems and stargazing.  […] Read More

5 Stunning “Moonbow” Photos

5 Stunning “Moonbow” Photos Image

We've all seen rainbows. But have you ever seen a moonbow? This rare phenomenon, also known as a lunar rainbow, occurs at night when light from the Moon illuminates falling water drops in the atmosphere. […] Read More


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"It’s important to support the only nonprofit organization whose sole purpose is to combat light pollution and keep the stars bright! I have donated to IDA for years, and I plan to do so for years to come."


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