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EntityQ249185· pop 13· linked from 2 articles

M42 or M-42 may refer to:

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M42 or M-42 may refer to:

In science: Messier 42, a nebula also called the Orion Nebula the 42nd Mersenne prime, 225964951-1, discovered in 2005 an Y-chromosomal mutation, see Haplogroup B-M42

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