In 2002, high-school student Jennifer Barlow had a simple idea: let's take some time to appreciate the beauty of the cosmos and consider ways to reduce the spread of light pollution. Here's how you can join the celebration! Have you ever stepped outside to take in a view of the starry sky overhead —...
Light pollution is most amateur astronomers' worst enemy. Learn here how to measure and describe how brightly your sky glows.
Bright skies aren't empty skies. See for yourself how many treasures lie hidden in the glow of a city sky.
This flyer (which can also be printed as a PDF) tells you everything you and your neighbors need to know about how to address light pollution in your neighborhood.
A primer on light-pollution jargon
How to light your home safely, save energy, and decrease light polluion at the same time.
In the war against light pollution astronomers have gained important new allies -- and new insights into how we see at night.
You don't have to fight city hall. To ban bad lights, make city hall your friend.
One person can make a difference, as demonstrated by a high-school student's single-handed effort to help us all appreciate the night sky.
Here's how to find exterior residential lighting that's dark-sky friendly.
Here's a selection of manufacturers and suppliers of good lighting equipment.
Excellent? Typical? Urban? Use this nine-step scale to rate the sky conditions at any observing site.
Only a tiny fraction of amateur astronomers do anything to help reduce bad outdoor lighting. We need to change that.
Knowledge is power: here are the facts you need to help you combat light pollution in your neighborhood.
Light pollution has become so pervasive that it compromises the view of the universe for an estimated 90 percent of Americans.