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== Origin ==
== Origin ==
The creation of the Crab Nebula corresponds to the bright '''SN 1054''' supernova, which was recorded by Chinese astronomers in 1054 AD. The Crab Nebula itself was first observed in 1731 by John Bevis. The nebula was independently rediscovered in 1758 by [[Charles Messier]] as he was observing a bright [[comet]]. Messier catalogued it as the first entry in his [[Messier Catalogue|catalogue]] of comet-like objects. The [[William Parsons, 3rd Earl of Rosse|Earl of Rosse]] observed the nebula at [[Birr Castle]] in 1848, and referred to the object as the Crab Nebula because a drawing he made of it looked like a crab.<ref>
The creation of the Crab Nebula corresponds to the bright '''SN 1054''' supernova, which was recorded by Chinese astronomers in 1054 AD. The Crab Nebula itself was first observed in 1731 by John Bevis. The nebula was independently rediscovered in 1758 by [[Charles Messier]] as he was observing a bright [[comet]]. Messier catalogued it as the first entry in his [[Messier Catalogue|catalogue]] of comet-like objects. The [[William Parsons, 3rd Earl of Rosse|Earl of Rosse]] observed the nebula at [[Birr Castle]] in 1848, and referred to the object as the Crab Nebula because a drawing he made of it looked like a crab.<ref>
{{cite journal|author=Glyn Jones, K.|year=1976|title=The search for the nebulae|journal=Journal of the History of Astronomy|volume=7 |pages=67|bibcode=1976JHA.....7...67B}}</ref><ref>{{cite web|last=Rossi|first=B.B.|title=The Crab Nebula ancient history and recent discoveries|url=http://ntrs.nasa.gov/search.jsp?R=19700008151|work=NASA|publisher=NTRS|accessdate=October 1, 1969}}</ref>
{{cite journal|author=Glyn Jones, K.|year=1976|title=The search for the nebulae|journal=Journal of the History of Astronomy|volume=7 |pages=67|bibcode=1976JHA.....7...67B}}</ref><ref>{{cite web|last=Rossi|first=B.B.|title=The Crab Nebula ancient history and recent discoveries|url=http://ntrs.nasa.gov/search.jsp?R=19700008151|work=NASA|publisher=NTRS|access-date=October 1, 1969}}</ref>
[[File:The Crab Nebula NASA.ogv|thumb|left|thumbtime=6|The Crab Nebula video by [[NASA]]]]
[[File:The Crab Nebula NASA.ogv|thumb|left|thumbtime=6|The Crab Nebula video by [[NASA]]]]
|volume=3 |pages=145
|volume=3 |pages=145
|bibcode=1939ASPL....3..145M
|bibcode=1939ASPL....3..145M
}}</ref><ref name="Lundmark">
}}</ref><ref name="Lundmark">
{{cite journal
{{cite journal