Click on the image for a full resolution version See this image also on Instagram   Messier 10 is a bright globular cluster located 15,000 light years away, in the constellation Ophiuchus. It is close (2,000 light years away) from Messier 12 and it is more compact than its “neighbor”. M10 contains about 100,000 stars … Continue reading Messier 10. NGC 6254