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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!

Logo for IDA's Matching Gift Campaign. A photo of the Milky Way with mountains in the background and the text "Don't Miss Your Chance to Double Your Impact."

We have incredible news! Several of IDA’s generous donors have stepped up to combine their resources to match, dollar for dollar, every gift that we receive by August 9, up to $100,000! That means your […] Read More

Join for our 2015 Annual General Meeting

One Coin - Two Sides

The International Dark-Sky Association is thrilled to announce that our 26th Annual General Meeting will be held November 14-15, 2015, in Phoenix, Arizona. This year's conference theme is “One Coin ~ Two Sides: Impacts of […] Read More

Take Action to Prevent ‘Projecting Change’ in NYC

Take Action to Prevent ‘Projecting Change’ in NYC Image

A planned outdoor light projection event this Saturday, August 1, will bathe New York City's iconic Empire State Building in 800,000 lumens of light showing images of endangered species from around the world. The creators of the […] Read More

Welcome to IDA’s New Website!

A snapshot of the homepage of IDA's website.

After months of focused work, intensive collaboration and much sweat equity, we are excited to unveil our new and super improved IDA website. Thanks to our supporters, we now have a beautiful, streamlined, mobile-friendly website […] Read More


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For as little as $35 a year you can join us on our mission to protect the natural night sky.

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Your contributions help us continue our programs and increase our public outreach.

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Learn what you can do at home and in your community to reduce light pollution.

Our Programs

Light Pollution Affects Us All!






How You Can Help

Support IDA

More than half of our annual operating budget comes from our supporters … folks like you! Our generous members and donors are the lifeblood of our organization and are passionate about protecting the night skies.

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Learn What You Can Do

Our members and supporters are on the ground making a difference every day by spreading the word about light pollution to their neighbors, communities and public officials. You can make a difference, too! Become a leader in night sky protection.

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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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