GLOBE at Night data map

GLOBE at Night 2007 is Underway! |  There have been more than 2446 observations from 51 countries since the start of GLOBE at Night 2007 on March 8! This international star-counting activity comes in two flavors: the “classic” GLOBE at Night exercise that anyone can have fun doing with their unaided eyes, and a new effort to obtain precise measurements of urban dark skies using digital sky-brightness meters. For more, see NOAO Press Release 07-04.

Image Credit: C. Mayhew & R. Simmon (NASA/GSFC), NOAA/ NGDC, DMSP Digital Archive