WELCOME TO

THE HIDDEN SKY

Learn about light pollution and the importance of environmental conservation!

Light pollution is a real issue — altering the lives of hundreds of animals. See what you can do to help!

According to the National Health Institute,

UP TO 90% OF TURTLE HATCHLINGS CAN BE MISLEADED BY ARTIFICIAL LIGHT.

Light pollution is a real problem, harming many animals that are confused by our manmade bright lights — but there's an easy fix!

Turtle hatchling on beach

WAYS TO STOP LIGHT POLLUTION

Light fixtures

CHANGE LIGHT FIXTURES

Switch to warm toned lights, and adjust your fixtures so that lights point down, instead of aiming towards the sky. Using blinds is a great way to help as well!

LED light bulb

ENVIRONMENTAL LOBBYING

Contact local authorities and support dark sky initiatives to try to get the word across!

Light switch

TURN OFF LIGHTS AT NIGHT

If you live by the coastline, turning lights off can save hundreds of baby turtles and allow them to follow their natural instinct and swim to the ocean, instead of crawling down streets.

LIGHT POLLUTION MAP

Explore how bright the night skies are around the world — and see how light pollution affects your area.

LIGHT CHECK

Check how bright your surroundings are — and see if your night sky is healthy!

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Ask About Light Pollution

FUN FACTS:

LIGHT POLLUTION IS THE FASTEST GROWING TYPE OF POLLUTION ON EARTH.

Scientists estimate it increases by about 10% per year EVERY year worldwide.

MOST PEOPLE HAVE NEVER SEEN THE MILKY WAY GALAXY.

About 80% of Americans live in areas too bright to see it!

THE SKY NEVER REALLY GETS DARK IN CITIES.

Even at midnight, light from buildings bounces off dust and clouds, creating a glowing dome called skyglow.

LIGHT POLLUTION CAN REACH SPACE.

Astronauts on the ISS can easily see city lights from orbit!

THE BRIGHTEST SPOT ON EARTH IS LAS VEGAS.

Your Badges

Milky Way Badge

Milky Way Explorer

Complete the Light Check.

Galaxy Badge

Galaxy Guardian

Ask the AI about light pollution.

Planet Badge

Planet Protector

View the Light Pollution Map.

Stars Badge

Starlight Saver

Learn how to reduce light pollution.

LEARN MORE

BOOKS

Light Pollution Handbook

Saving the Night: How Light Pollution is Harming Life on Earth

The End of Night: Searching for Natural Darkness in an Age of Artificial Light

Natural Darkness in an Age of Artificial Light