Dark Sky preservation at Grand Canyon protects one of the darkest night skies in the country through responsible lighting, education, and astronomy programs supported by Grand Canyon Conservancy.
The night sky over Grand Canyon reveals a cascade of stars, planets, and galaxies that has inspired art, science, and human imagination for millennia. Today, that view is increasingly rare. Nearly one-third of the world’s population, including 80% of Americans, can no longer see the Milky Way due to artificial light pollution.
Grand Canyon National Park is one of the last places in the United States where visitors can still experience a truly star-filled sky. In recognition of this extraordinary resource, the park was designated an International Dark-Sky Park in 2019. Since then, Grand Canyon has continued to reduce light pollution through responsible lighting practices, infrastructure upgrades, and public education.
Dark Sky Preservation & Programs protect this rare natural resource while expanding opportunities for science, cultural connection, and visitor experience. As the official nonprofit partner of Grand Canyon National Park, Grand Canyon Conservancy helps keep Grand Canyon in the dark so the stars can shine!
Donor support plays a direct role in protecting natural darkness while creating meaningful opportunities for learning, wonder, and connection under the stars.
A core part of dark sky preservation is using smarter outdoor lighting across developed areas of the park.
This work includes:
• Shielding fixtures to reduce glare and sky glow
• Using warm bulbs and targeted lighting only where needed
• Adding timers and removing unnecessary lighting while maintaining safety
Grand Canyon’s progress is substantial: as of October 2025, 95% of park lights are dark-sky friendly, moving the park closer to the long-term goal of full compliance.
Grand Canyon’s dark sky interpretive programs are among the most attended in the park and demand continues to grow.
In 2025, Grand Canyon hosted:
• 250 astronomy programs
• 73,080 visitors reached
• 178 astronomy volunteers contributing 6,103 volunteer hours
A highlight of the year is the Grand Canyon Star Party, which has grown into one of the most celebrated night sky events in the country.
Thanks to Grand Canyon Conservancy support in 2025.
In 2025, GCC-supported Dark Skies efforts included:
• Delivering 250 astronomy programs reaching 73,080 visitors
• Supporting 178 astronomy volunteers contributing 6,103 hours of outreach and education
• Hosting the 35th Annual Grand Canyon Star Party, welcoming 9,616 visitors and enabling 108,861 telescope views
• Advancing International Dark-Sky Park certification progress to 95% compliance as of October 2025
• Replacing 207 light fixtures in key areas, including Clinic, HQ, Yavapai Geology Museum, Supai Camp, Museum Collections, Paiute stairwells, Albright, Xanterra Purchasing, and more
• Completing an extensive night sky quality study to help guide future mitigation work inside and beyond the park
In 2026, Dark Skies priorities include:
• Continuing progress toward full lighting compliance by upgrading Desert View fixtures and remaining Village fixtures
• Expanding astronomy programming and outreach, including continued support for Star Party and ongoing public viewing opportunities
• Growing educational experiences that connect visitors to light pollution solutions and night sky stewardship
• Continuing annual sky quality measurements required for International Dark-Sky certification and using findings to inform mitigation strategies
• Hosting the 36th Annual Grand Canyon Star Party (June 6–13, 2026)
“What better place in the world to experience the night sky than Grand Canyon? Support for dark sky programs means that thousands of visitors develop a deep and lasting bond with the park through an experience that can truly provide a life-changing source of awe and inspiration.”
“I remember getting a knock on our cabin door one night from the grandchildren. They had just participated in the night program and were so excited to share the news. They could see the Milky Way for the first time in their lives.”
What does International Dark Sky Park designation mean?
It recognizes areas with exceptional night sky quality and a strong commitment to responsible lighting and public education.
How do Dark Sky programs benefit wildlife?
Reduced light pollution helps protect nocturnal species and natural behavior patterns.
Can visitors participate in astronomy programs?
Yes. Star Parties and other public programs offer opportunities for guided night sky observation.
