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Canes Venatici (the hunting dogs) is a small northern constellation that was introduced by Johannes Hevelius in the 17th century. It is supposed to represent the dogs Chara and Asterion held on a leash by Boötes.

Among the objects in Canes Venatici is the Whirlpool Galaxy, M51, a spiralA spiral galaxy is a type of galaxy in the Hubble sequence which is characterized by the following physical properties: Spiral Galaxy M74 presents a face-on view of its spiral arms. It contains about 100 billion stars, 30 million light-years away toward t galaxyThis article is about a celestial body. For alternate meanings see galaxy (disambiguation). Spiral Galaxy ESO 269-57 is about 150 million light-years away and 200,000 light-years across. Stars are almost always found in collections called galaxies togethe that is seen face on. This was the first galaxy recognised as having a spiral structure, this structure being first observed by Lord RosseWilliam Parsons, 3rd Earl of Rosse ( June 17, 1800 October 31, 1867) was an Irish astronomer. He became the third Earl of Rosse when his father died in 1841. Prior to this, his title was "Lord Oxmantown". In the 1840s, he built his "Leviathan of Parsonsto in 1845Events January 29 The Raven by Edgar Allan Poe is published for the first time New York Evening Mirror . March 1 President John Tyler signs a bill authorizing the United States to annex the Republic of Texas. March 3 Florida is admitted as the 27th U..