Night Sky

Discover Capitol Reef National Park's dark night skies. Designated an International Dark Sky Park in 2015, Capitol Reef offers many opportunities to experience near-pristine night skies.The night sky is everyone's heritage; however, natural darkness is becoming rare. Capitol Reef National Park has some of the best night sky viewing opportunities of the western national parks. For more information, visit the Natural Sounds and Night Skies Division of the National Park Service.

Dark night skies are essential for ecosystem health and human health. Learn about the impacts of light pollution and how to protect dark night skies.

 
Two black and white photos taken at night: mountain lion by a dry creek and a coyote walking through grass.
About 30% of animals with a backbone (vertebrates) are active at night (nocturnal). Many more, like mountain lions (left) and coyotes (right), are active around dawn and dusk (crepuscular).

NPS

Natural Night Skies and Animals


For billions of years, life has relied upon the predictable rhythm of day and night (circadian rhythm). It is in the DNA of all living things. It guides behaviors such as sleep, protection from predators, finding food, and reproduction.

The cover of darkness allows animals to hide or aids in stealth. Imagine animals working in shifts: day shift, evening, night. This shift work allows noctural animals to share resources such as food, water, and space with daytime animals; it lessens competition.

Even animals typically thought of as daytime creatures, like birds, make use of the dark. Approximately half of all birds in the U.S. are migratory and they rely upon the darkness of night during the often long and arduous process of moving from breeding grounds to wintering grounds. The darkness allows them to hide from predators. Cooler temperatures and less air turbulence help them to use less energy, and they find their way using the stars as a guide.

Capitol Reef National Park is home to many nocturnal desert animals: ringtails, raccoons, kangaroo rats, night snakes, and owls; as well as 16 species of bats (which are 20% of all mammal species). Bats feed on insects, which in turn pollinate plants; in fact, both bats and insects pollinate plants that provide food we eat. Bats pollinate over 300 species of fruit, including mangos and bananas.

Wildlife and plants benefit us, and need darkness to thrive, as do humans.
 

Night Skies and People

Until recently, humans saw pristine night skies filled with innumberable stars and the Milky Way. The night sky has inspired science, religion, philosophy, art, and more. It has kept us entertained and given rise to poetry, myths, and legends. The North Star guided the way to freedom for enslaved people in the United States. There are physical and biological needs and benefits, too. Healthy skies help humans to have healthy lives. Darkness allows humans to produce melatonin, an hormone which helps us sleep, among other things. When people are exposed to artifical light, there can be consequences for our health.
 
Blacktop road at night, curving between red hills and cliffs, underneath the Milky Way.
The Scenic Drive illuminated by vehicle headlights.

NPS/Nathan Gross

Impacts of Light Pollution

Light pollution not only threatens the ability to enjoy the stars, it threatens human health and the health of all living things. The birds that use the stars to migrate are impacted. Artificial light can cause them to lose their course, run into lit buildings, or migrate at the wrong time. Insects that pollinate food plants are drawn to artificial light. This exposes insects to increased predation and can affect the food web. Insect populations around the world are declining, which negatively impacts all species that rely on insects for food or pollination.

Since the Industrial Revolution, artificial lights of all kinds have expanded across the globe. People have also concentrated into cities, exponentially increasing this impact.

Do you sleep better when it is really dark? Sometimes people use blackout curtains and sleep masks to block out light. Artificial light can disrupt human sleep cycles and cause sleep disorders, but that is not all. Light from outside the window, from phones, and TVs, all increase the risks for obesity, depression, diabetes, and cancer. The hormone melatonin not only helps people sleep, it has antioxidant properties, too. Melatonin boosts the immune system, lowers cholesterol, and helps the function of the thyroid, pancreas, adrenal glands, and more.

Light pollution affects all life on Earth, yet there are ways to minimize it, and use light responsibly.

 
Dark sky imaging of all sources of light, including the Milky Way. Dark sky imaging with only artificial light, leaving almost all black night skies.
The Milky Way arcs through the night sky, as seen from the Burr Trail. NPS/Natural Sounds & Night Skies Division
Remove all the natural light sources, and there is very little light pollution seen from the Burr Trail. NPS/Natural Sounds & Night Skies Division



 

Protect Night Skies

Light pollution is the probably easiest form of pollution to fix. It is as easy as flipping a switch, closing a shade, and changing light bulbs at home. Simply turn off outside lights, and make sure the blinds and curtains are closed. Choose the right kind of light and shield it. On a larger scale, many communities are receiving dark sky designations, such as Torrey, Utah’s first dark sky community, and Flagstaff, Arizona, the first ever dark sky community and home to the Lowell Observatory. Help uncover the darkness of night again!

Discover dark skies near you!

 
 

“Our fantastic civilization has fallen out of touch with many aspects of nature, and none more completely than with night… with lights and ever more lights, we drive the holiness and beauty of the night back to the forests and the sea; the little villages, the crossroads even, will have none of it. Are modern folk, perhaps afraid of night? Do they fear that vast serenity, the mystery of infinite space, the austerity of a star?...”

--Henry Boston, 1888-1986

Last updated: November 23, 2019

Contact the Park

Mailing Address:

HC 70, Box 15
Torrey, UT 84775

Phone:

435-425-3791

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