WELCOME TO THE IDA-UK

The International Dark-Sky Association (IDA) is the recognised authority on light pollution and the leading organization combating light pollution worldwide.

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Join The Dark-Sky Movement

Become a member of IDA-UK and help us in our mission to stop light pollution. You'll gain access to premium content, premium resouces and be among the first to know of new events and news.

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Learn about the causes and effects of light pollution and what we can do to stop it.

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All donations and membership fees go towards our efforts to fight light pollution.

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WHAT IS LIGHT POLLUTION?
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RECENT POSTS
The milky way in Autumn over the roof of Battlesteads Observatory
The Big Switch Off.
The Big Switch Off of lights across Ambleside and Grasmere is happening again this year on Thursday 23rd...
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Before & After Horizontal 3
Case Study: Night/Dark Sky Friendly Lighting Retrofit.
These are before and after photos of a lighting retrofit at the National Outdoor Centre, Plas Y Brenin...
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a 15 second exposure showing the behaviour of insects around artificial lights. Image: Nevit Dilman It is dark and there is a streetlight attracting insects to it. Because it is a long exposure you can see the trails the insects make as they travel towards and around the light.
Environment
Human Health Light pollution, especially the blue part of the spectrum of artificial light at night,...
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LIGHT POLLUTION AFFECTS US ALL

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Human Health

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HOW YOU CAN HELP

Join IDA-UK

If you are passionate about protecting the night sky, then become a member and get access to our online community, the IDA newsletters and much more!  Members and donors like you are the lifeblood of our organization.

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Learn What You Can Do

Our members and supporters help by spreading the word about light pollution and the environment to their neighbours, communities and politicians. You can even make a difference just by improving your own lighting.

how You can help

Make A Donation

Join our family of supporters by making a monthly or one-off donation. We rely on the generosity of those who share our passion for preserving the natural night sky. 

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