Schoolchildren, families, and citizen scientists around the world will gaze skyward after dark from October 1 to 15, looking for specific constellations and then sharing their observations through the Internet. The initiative, called the Great World Wide Star Count, will help scientists map light pollution globally while educating participants about the stars. The event, which is free and open to everyone who wants to participate, is organized by the Windows to the Universe project at the University Corporation for Atmospheric Research (UCAR), in conjunction with planetariums and scientific societies across the country and abroad. Funding is provided by the National Science Foundation.