The Supernova of 1054, Our Very Special "Guest Star"

All of humanity likely saw it, a brilliant supernova that lit up the daytime sky in 1054. But 960 years later, there’s still a lot we dont quite understand about the famous celestial phenomenon.
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Sources:
http://en.wikipedia.org/wiki/Crab_Nebula
http://en.m.wikipedia.org/wiki/SN_1054
http://www.astronomy.pomona.edu/arche...
http://www.astronomy.com/news-observi...
   • Multiwavelength Crab Nebula | Earth's...  
http://adsabs.harvard.edu/full/1970A%...
http://www.space.com/16989-crab-nebul...
http://en.wikipedia.org/wiki/Crab_Pulsar
   • Crab Pulsar  
http://www.nasa.gov/multimedia/imageg...
http://hubblesite.org/gallery/album/n...
http://chandra.harvard.edu/photo/1999...