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出典:Wikipedia
出典:『Wikipedia』 (2011/05/26 02:58 UTC 版)
Messier 56 (also known as M56 or NGC 6779) is a globular cluster in the constellation Lyra. It was discovered by Charles Messier in 1779. M56 is at a distance of about 32,900 light-years from Earth and measures roughly 84 light-years across.
Messier 56