deep sky

"Always try to keep a patch of sky above your life." -Marcel Proust Welcome to another Messier Monday, where each week we take an in-depth look at one of the 110 deep sky objects that make up the Messier Catalogue! Messier was not the first person to try and make an accurate, large catalog of deep sky objects, but he was the first to successfully do so: most of his objects both actually exist, are deep sky objects, and had their positions recorded correctly. Image credit: © 2008 Space-and-Telescope.com. Most, that is, but not all. Today, we'll be looking at the open star cluster Messier 48…