Light Pollution Threatens Cultural Heritage for Young People

Constellations, once vital for seasonal guidance, are fading from sight and memory due to increasing light pollution.
The Milky Way over a red rock arch.

Constellations and the Seasonal Knowledge They Provide Are Disappearing

The Milky Way over a red rock arch.

A meteor, the Milky Way, and the Delicate Arch in Grand County, Utah. | Photo by ManishMamtani/iStock

Stargazing enthusiasts are increasingly concerned as light pollution dims the night sky. Cherry Springs State Park in Pennsylvania, known for its pristine views, draws visitors from urban areas like New Jersey and New York. A recent trip by two astrophysics students highlighted the stark contrast between city skies and the star-filled vistas of rural areas.

Most Americans live under light-polluted skies, unable to see the Milky Way. A 2023 study in Science reveals North American skies are brightening by 10% annually, threatening the visibility of even the brightest constellations. A child born today under 250 stars might see only 100 by adulthood.

Young people, particularly Gen Z, often grow up under skies with fewer stars. A recent conversation with a friend from Brooklyn, who had never seen a shooting star outside of movies, underscores this reality. DarkSky International, a nonprofit, advocates for responsible outdoor lighting to preserve night skies and help wildlife.

Elliot Smith, a high school senior near Pittsburgh, only recently experienced a truly starry sky. Inspired by this, he designed shields for outdoor lights through a teen mentorship program at Carnegie Science. He hopes to implement these designs with the help of DarkSky’s volunteer network.

The impact of light pollution extends to cultural heritage. Navajo park ranger Ravis Henry expresses concern for Indigenous traditions tied to the night sky. He notes that stars guide seasons and ceremonies, a practice threatened by urban expansion.

Similarly, Native Hawaiian Gisele Bisch recalls learning constellations as a child. Now at Princeton University, she struggles to see the stars that once guided her ancestors. This loss of connection is echoed by many who grew up with clearer skies.

DarkSky International certifies locations as Dark Sky Places to protect night skies. These areas, like Flagstaff, Arizona, and parts of South Africa, focus on preserving both natural darkness and cultural knowledge. Currently, over 200 locations in 22 countries are certified, with efforts to expand.

For more information on light pollution, visit related stories.

Original Story at www.sierraclub.org

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