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出典:Wikipedia
出典:『Wikipedia』 (2011/07/25 04:11 UTC 版)
The nebula Messier 78 (also known as M 78 or NGC 2068) is a reflection nebula in the constellation Orion. It was discovered by Pierre Méchain in 1780 and included by Charles Messier in his catalog of comet-like objects that same year.
Messier 78