Messier object

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters, first published in 1774.

The first edition covered 45 objects numbered M1 to M45.

Some of the most famous Messier objects are:

M1: The [Crab Nebula]?

M13: The [Hercules Globular Cluster]?

M31: The [Andromeda Galaxy]?

See also:

• Local Group