Schoolchildren, families and citizen scientists around the world will gaze skyward after dark from Oct. 20 to Nov.3, 2008, looking for specific constellations and then sharing their observations through the Internet.
The Great World Wide Star Count, now in its second year, helps scientists map light pollution globally while educating participants about the stars.
The event, which is 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 Boulder, Colo., in conjunction with planetariums and scientific societies across the country and abroad.