Messier 3 is a globular cluster that was discovered by Charles Messier in 1764. This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is located within Canes Venatici, a small northern constellation, at a distance of about 33900 light years. Messier 3 is visible to the naked eye in certain conditions.Photo credit: Ryan Bruels