jul 072013
Anne's Image of the Day: Globular Cluster Messier 3

July 7, 2013 Messier 3, a globular cluster in Canes Venatici Image Credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona (http://skycenter.arizona.edu/gallery/StarClusters/M3) Messier 3 (also known as NGC 5272) is a globular cluster of some 180 – 220 light-years across, located about 33,900 light-years away from Earth in the northern constellation of Canes Venatici (the Hunting Dogs), [continue reading]