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⚫ The '''Whirlpool Galaxy''', '''Messier Object 51''' ('''M51'''), also known as '''NGC 5194''', is a classic ], discovered by ] on ], ]. It is one of the brightest, most compelling ] in the sky, visible with ] in the constellation ]. The spiral galactic structure was first observed in this galaxy, which is the dominant member of the ] of galaxies.


The '''Whirlpool Galaxy''' (also known as '''Spiral Galaxy M51''', '''Messier Object 51''', '''Messier 51''', '''M51''', or '''NGC 5194''') is a classic ] located in the ]. It was discovered by ] on ], ].
⚫ Its companion galaxy, ], was discovered in ] by ]. Sometimes M51 is used to refer to the pair of galaxies, in which case the individual galaxies may be referred to as M51A (5194) and M51B (5195). The galaxy is less than 37 million ]s away — some measurements put the distance at only 15 million.


==General information==
⚫ == External links ==
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⚫ The Whirpool Galaxy is one of the brightest, most compelling ] in the sky, visible with ]. The spiral galactic structure was first observed in this galaxy, which is the dominant member of the ].
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⚫ Its companion galaxy, ], was discovered in ] by ]. Sometimes M51 is used to refer to the pair of galaxies, in which case the individual galaxies may be referred to as M51A (5194) and M51B (5195). The galaxy is less than 37 million ]s away from ] — some measurements put the distance at only 15 million.

⚫ == External links ==
⚫ *
*

⚫ ]
] ]
] ]
] ]

⚫ ]
] ]

Revision as of 20:13, 5 September 2004

Messier Object 51, the Whirpool Galaxy.

The Whirlpool Galaxy (also known as Spiral Galaxy M51, Messier Object 51, Messier 51, M51, or NGC 5194) is a classic spiral galaxy located in the Canes Venatici constellation. It was discovered by Charles Messier on October 13, 1773.

General information

The Whirpool Galaxy is one of the brightest, most compelling galaxies in the sky, visible with binoculars. The spiral galactic structure was first observed in this galaxy, which is the dominant member of the M51 group of galaxies.

Its companion galaxy, NGC 5195, was discovered in 1781 by Pierre Méchain. Sometimes M51 is used to refer to the pair of galaxies, in which case the individual galaxies may be referred to as M51A (5194) and M51B (5195). The galaxy is less than 37 million light years away from Earth — some measurements put the distance at only 15 million.

External links

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