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The Whirlpool Galaxy, also known as Messier 51a (M51a) or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. [6] [7] [8] It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. [9]
The M51 Group is located to the southeast of the M101 Group and the NGC 5866 Group. [6] The distances to these three groups (as determined from the distances to the individual member galaxies) are similar, which suggests that the M51 Group, the M101 Group, and the NGC 5866 Group are actually part of a large, loose, elongated structure. [6]
M51 MACI mine; M51 SLBM, a French nuclear ballistic missile; BMW M51, a 1991 straight-6 Diesel engine; Sherman M-51, an Israeli modification of American M4 Sherman tank; Eidgenössischer Stutzer 1851, a historical service rifle of the Swiss Army; Messier 51, a spiral galaxy also known as the Whirlpool Galaxy; Samsung Galaxy M51, a smartphone ...
A sequel to President Elect, a simulation of a presidential campaign from Labor Day to election night. Professional Tour Golf: 1983: AppII, C64 A golf simulator. Prophecy of the Shadow: 1992: DOS A fantasy role-playing video game: Queen of Hearts: 1983: AppII A pinball simulator. Questron: 1984: Ami, AppII, ATR, C64, A fantasy role-playing ...
NGC 5195 (also known as Messier 51b or M51b) is a dwarf galaxy that is interacting with the Whirlpool Galaxy (also known as M51a or NGC 5194). Both galaxies are located approximately 25 million light-years away in the constellation Canes Venatici.
A 10 July 2010 test validated the Triomphant-class submarine's capacity to launch the M51 in operational conditions. [18] On 5 May 2013, an M51 flight test missile failed after being fired by a submerged ballistic missile submarine off the coast of Brittany. This was the first failed launch of the M51 after five successful launches since 2006. [19]
The use a variety of fuzes, a M61 pressure/friction fuze, a "tentacle" fuze with four hoses that triggers the mine when two of the opposite tentacles are crushed, and a tilt rod fuze. The M51 and M52 are broadly similar with a thin fibreglass cases, the principal difference being the M52 is slightly larger than the M51.
Koei Co., Ltd. was a Japanese video game publisher, developer, and distributor founded in 1978.The company is known for its historical simulation games based on the novel Romance of the Three Kingdoms, as well as simulation games based on pseudo-historical events.