Citizen Scientist

Girl Scout event with solar observing. Photo by Keith Caceres

Citizen science is the practice of public participation and collaboration in scientific research to increase scientific knowledge as a citizen volunteer. Through citizen science, people share and contribute to data monitoring and collection programs such as Globe at Night.

The Citizen Scientist Toolkit includes resources to empower members of the public to collect, analyze, and share natural nighttime data.


Dark Sky Monitoring

An important part of solving the problem of light pollution is to have a thorough understanding of its magnitude, and a great way to do that is to measure the brightness of the night sky. This document provides an overview to help citizen scientists get started.

Colorado Parks & Wildlife


This worksheet guides users through several evaluation methods which could be used for a general assessment of dark sky friendly lighting in a community.

Utah Community Development Office

Astrophotography 101

Capturing images of our night skies is beneficial for communicating the issue of light pollution. Opening our camera shutters for long periods of time allows faint light to become quite obvious. When capturing images of the night sky, you will also capture the domes of skyglow on the horizon. Learn the basics with Astrophotography 101.

Bettymaya Foott, Director of Public Engagement at the International Dark Sky Association


Globe at Night is an international citizen-science campaign to raise public awareness of the impact of light pollution by inviting citizen-scientists to measure & submit their night sky brightness observations.


Time and DaTE

Explore the world through time and date. Travel back into history or into the future and learn about the movement of celestial bodies.

Time and Date AS

Radiance Light Trends

An interactive web map for examining changes in nighttime light emissions (nearly) worldwide.

Deneb, Geoinformation solutions, Jurij Stare s.p.

“By providing concrete evidence of a problem or of an opportunity to make things betters, a community can build its case for enacting positive change.”

– Espiau, Renee and Burillo, Renee. (2008)