Click on the image for a full resolution version See this image also on Instagram   Messier 13 is a conspicuous globular cluster located about 22,200 light years away in the constellation Hercules. Even being the most famous globular visible from the Northern Hemisphere, M13 is not the biggest one. Messier 22 is smaller in … Continue reading Messier 13. NGC 6205. The Great Hercules Cluster