Messier Catalogue

Definition

Astronomy

  • List of 109 objects in the sky, from M1, the Crab Nebula, to M109, a galaxy in Ursa Major, drawn up by Charles Messier. The list’s prominent members also include M31, the Andromeda Nebula, M42, the great nebula in Orion, M45, the Pleiades, and M44, Praesepe. The passage of time means that there is now some controversy over the exact identity of some of his 109 objects.
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