Skip to content. Skip to navigation

Cornell Lab of Ornithology


Great World Wide Star Count

The Great World Wide Star Count

is run by the

University Corporation for Atmospheric Research Office of Outreach and Education

Star Count



The Great World Wide Starcount is a Windows to the Universe international citizen-science event that encourages everyone, astronomers and non-astronomers alike, to measure their local light pollution and report their observations online. The Great World Wide Star Count, part of the Dark Skies Awareness cornerstone project for the 2009 International Year of Astronomy, raises awareness about light pollution as well as encourages learning in astronomy. No prior experience is necessary and the downloadable activity guide is available in eight different languages on the Web site.


Open the Great World Wide Star Count website



Topic - astronomy, light pollution, stars, constellations

Audience - educators, students, families, astronomy clubs

Location - International, all countries around the world

Goals - education, night sky quality



Sandra Henderson, Director, Great World Wide Star Count  email Sandra


Dennis L. Ward, Astronomer  email Dennis


Citizen science, volunteer monitoring, participatory action research... this site supports organizers of all initiatives where public participants are involved in scientific research.

More about this...