Messier is an easy to use list of all the deep sky objects catalogued by Charles Messier, which consists of 112 objects. Each object has detailed information including the constellation it’s contained in, the months you can see it (in the northern hemisphere), the object’s coordinates in the sky, and additional information specific to that object. Along with information on each Messier object, this application also has information on each of the 88 constellations including: the story behind the constellation, its location in the sky, the Messier objects it contains, and more. This is my 1st App. I am a High School Student in the 10th Grade at the Treasure Valley Math and Science Center and Kuna High School in Idaho.