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  1. Oxford Dictionary

    Messier, Charles

    • IPA[ˈmɛsɪə]

    英式

    • ph.
      (1730–1817), French astronomer. He discovered a number of nebulae, galaxies, and star clusters, which he designated by M numbers. Almost all of these designations, such as M1 (the Crab Nebula), are still in use today.