Dark & Quiet Skies

Protecting the natural night environment through sustainable space practices and satellite monitoring.

Why Dark and Quiet Skies Matter

Excess artificial light at night, known as light pollution, disrupts human circadian rhythms, affects wildlife behavior, and diminishes our ability to observe the cosmos. Quiet skies also reduce radio frequency interference, critical for astronomy and satellite operations.

Studies show that chronic exposure to artificial light at night can lead to sleep disorders, hormonal imbalances, and increased risk of certain health conditions. Wildlife, from migratory birds to nocturnal mammals, are equally affected, with disruptions to natural behaviors and ecosystems.

How We Support Dark and Quiet Skies

Monitoring global light pollution using VIIRS Day/Night Band data and Earth Observation Group products.
Promoting satellite and space operations that minimize reflective surfaces and stray light.
Engaging with sustainable propulsion and satellite design initiatives to reduce orbital debris and maintain dark skies.
Supporting astronomy-friendly orbital regulations and international dark-sky initiatives.

Nighttime Light Visualisations

No cards available.

Missions & Programmes Supporting Dark Skies

No dark-skies missions data available.

References & Resources

Elvidge, C.D., Baugh, K., Zhizhin, M., Hsu, F.-C., & Ghosh, T. “VIIRS night-time lights.” International Journal of Remote Sensing, 2017.
Falchi, F., Cinzano, P., Duriscoe, D. et al. “The new world atlas of artificial night sky brightness.” Science Advances, 2016.
International Dark-Sky Association: https://www.darksky.org