How do we measure light pollution, and how can we track improvements?
Light pollution is measured with satellite data, sky quality meters, and citizen science projects like star counts. These tools show where light pollution is getting worse, or better. The good news is improvements can be seen quickly: with smarter lighting, skies become darker and clearer almost immediately. [Click here to learn more about measuring light pollution.]
What are the basic things I need to know to take action today?
You can make a difference right now by using light only where it’s needed, pointing lights downwards, shielding outdoor fixtures, and turning off unnecessary lighting. These simple steps reduce light pollution, save energy, and protect the night sky. [Learn more on our Outdoor Lighting Basics page.]
How do I find dark sky-friendly lighting?
Dark Sky UK can certainly guide you on what to look for. We have an international curated a list of recommended fixtures and retailers that meet dark-sky-friendly standards, reducing glare, preventing light spill, and protecting the night sky. [See our recommended lighting resources here.] If you can’t find what you need in the international database, contact us directly and we’ll do our best to help.
What counts as bad street lighting?
Bad street lighting is any lighting that creates glare, shines upwards into the sky, or spills into areas it isn’t needed. It wastes energy, disrupts wildlife, affects human health, and blocks our view of the stars. Good lighting should be shielded, directed downwards, and only used where and when needed. [Click here to visit our full page on street lighting.]
What research can I find out about?
There’s a growing body of research on how light pollution affects human health, wildlife, energy use, climate change, and our view of the night sky. Studies cover everything from disrupted sleep patterns to declining insect populations. [Click here for more information and access to research resources.]
How should outdoor sports lighting be managed?
Outdoor sports lighting can generate significant light pollution if not properly designed. Using shielded fixtures, directing light only onto the playing area, and limiting operating hours can greatly reduce its impact. [Find out more about best practices for outdoor sports lighting here.]
Can someone from Dark Sky UK speak at our event about light pollution and dark sky preservation?
Quite possibly! We’re happy to discuss speaking at your event. As our travel budget is very limited, it may be necessary for your organisation to cover travel expenses. In addition, Dark Sky UK has a network of volunteer advocates who may be able to help. Contact us to share your event details and vision, and we’ll explore the best way to support you.
What is the DarkSky Approved Program?
The DarkSky Approved Program is an independent, third-party certification for lighting products, designs, and projects that meet strict dark-sky standards. Certified solutions minimise glare, prevent light trespass, and protect the natural night sky. [Visit the international program page here.]
Do you have any resources for educators?
Yes. We’ve put together lesson plans, activities, and teaching guides designed to help bring the topic of light pollution and night sky preservation into the classroom. [Visit our Materials for Educators page here.]
How does becoming a member help solve the problem?
Membership directly supports our work to reduce light pollution through education, advocacy, community projects, and dark sky protection initiatives. Your contribution helps us raise awareness, influence better lighting policies, and provide resources for individuals and communities. By joining, you’re not only funding solutions but also adding your voice to a growing movement dedicated to restoring the night sky. Discover the right membership for you.
How do I find places with dark skies?
If you’re traveling, you can explore [the international dark sky locations here], or check out [UK-specific dark sky sites here]. You can also use NASA’s interactive Blue Marble map to identify areas with minimal or no light pollution, perfect for stargazing and experiencing truly dark skies.