Astron.
a catalog of nonstellar objects compiled by Charles Messier in 1784 and later slightly extended, now known to contain nebulae, galaxies, and star clusters.
Astron.
a catalog of nonstellar objects compiled by Charles Messier in 1784 and later slightly extended, now known to contain nebulae, galaxies, and star clusters.
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012