According to the International Dark-Sky Association (IDA) – founded in 1988 and based in Tucson, Arizona – light pollution is increasing at a rate twice that of human population growth. And 83% of people around the world lives under a light-polluted sky. That’s why IDA has established an International Dark Sky Week, which in 2023 falls on April 15 to 22. Goals for the week include turning off unneeded exterior lights and considering leaving them off all year long.
And IDA hopes you’ll join the global dark sky movement to protect and celebrate our shared heritage of dark night skies.
According to the IDA:
It may seem harmless, but light pollution has far-reaching consequences that are harmful to all living things. Effective outdoor lighting reduces light pollution, leading to a better quality of life for all. The dark sky movement is working to bring better lighting to communities around the world so that all life can thrive.
Ways to celebrate International Dark Sky Week
Looking for ways to celebrate International Dark Sky Week? Find International Dark Sky Week events all over the world, organized by astronomy clubs, schools, universities, communities and more.
Visit EarthSky’s night sky guide to see what you can view in the sky this week. The Lyrid meteor shower will be at its best around April 22. On the same date, Venus will shine near a thin crescent moon in Taurus the Bull. Nearby are two lovely star clusters, the diminutive Pleiades star cluster and the larger V-shaped Hyades star cluster with its bright red foreground star, Aldebaran.
Dark-sky photos from the EarthSky Community
Bottom line: Celebrate dark night skies and help limit light pollution by raising awareness through the annual International Dark Sky Week, April 15 to 22, 2023. Find links to global events here.