In 2019 and early 2020, school pupils, teachers, scout groups, astronomers and interested members of the public in Sweden, Spain, the UK and Ireland went out to count stars in the night sky. The objective was to help researcher, Urban Eriksson, Lund University, to test a new method for measuring light pollution. The Star-Spotting Experiment was a citizen science project run as part of European Researchers’ Night activities in Sweden, Spain, Ireland and the UK, co-ordinated by the Swedish non-profit organisation VA (Public & Science). Over 1900 observations were recorded during the experiment across the four countries. This report presents the results of the project.
