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M42

M42 or M-42 may refer to: In science: * Messier 42, a nebula also called the Orion Nebula * the 42nd Mersenne prime, 2 25964951 -1, discovered in 2005 *an Y-chromosomal mutation, see Haplogroup B-M42 In transportation: * M42 motorway, a motorway in the United Kingdom * M-42 (Michigan highway), a state highway in Michigan * M42 (Cape Town), a Metropolitan Route in Cape Town, South Africa * M42 (Pretoria), a Metropolitan Route in Pretoria, South Africa * M42 (New York City bus), a New York City Bus route in Manhattan * BMW M42, a 1989 automobile piston engine * Dodge M42, ¾-ton command truck, 1950s * M42 (sub-basement), a power station at New York City's Grand Central Terminal In photography: * M42 lens mount, a standard for cameras In firearms and military equipment: * Ag m/42, a Swedish semi-automatic rifle which saw limited use by the Swedish Army from 1942 until the 1960s * M42 Duster, a United States Army self-propelled anti-aircraft gun * M42 (gas mask), a United States military gas mask * M/42 (bicycle), a Swedish military bicycle * 45 mm anti-tank gun M1942 (M-42), a Soviet anti-tank gun (Motovilikha Plants) * Duperite M42 helmet, an Australian WWII helmet * M42 Stahlhelm, a type of German WWII helmet * M42, a Smith & Wesson hammerless revolver * M42 United Defense submachine gun, an American weapon used in World War II * M42 command truck In manufacturing: * M42 is the U…

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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, 2 25964951 -1, discovered in 2005 *an Y-chromosomal mutation, see Haplogroup B-M42 In transportation: * M42 motorway, a motorway in the United Kingdom * M-42 (Michigan highway), a state highway in Michigan * M42 (Cape Town), a Metropolitan Route in Cape Town, South Africa * M42 (Pretoria), a Metropolitan Route in Pretoria, South Africa * M42 (New York City bus), a New York City Bus route in Manhattan * BMW M42, a 1989 automobile piston engine * Dodge M42, ¾-ton command truck, 1950s * M42 (sub-basement), a power station at New York City's Grand Central Terminal In photography: * M42 lens mount, a standard for cameras In firearms and military equipment: * Ag m/42, a Swedish semi-automatic rifle which saw limited use by the Swedish Army from 1942 until the 1960s * M42 Duster, a United States Army self-propelled anti-aircraft gun * M42 (gas mask), a United States military gas mask * M/42 (bicycle), a Swedish military bicycle * 45 mm anti-tank gun M1942 (M-42), a Soviet anti-tank gun (Motovilikha Plants) * Duperite M42 helmet, an Australian WWII helmet * M42 Stahlhelm, a type of German WWII helmet * M42, a Smith & Wesson hammerless revolver * M42 United Defense submachine gun, an American weapon used in World War II * M42 command truck In manufacturing: * M42 is the U…

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  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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