The Crab Nebula, also known as M1, NGC 1952 and Taurus A is a
supernova remnant in the constellation of Taurus. Its name comes from astronomer William Parsons, who observed it in 1850 and produced a drawing that looked like a crab.
The Crab Nebula was the first astronomical object recognized as being connected to a supernova explosion.=reference
[11] In the early twentieth century, the analysis of early
photographs of the nebula taken several years apart revealed that it was expanding. Tracing the expansion back revealed that the nebula must have become visible on Earth about 900 years before. Historical records revealed that a new star bright enough to be seen in the daytime had been recorded in the same part of the sky by Chinese astronomers on 4 July 1054, and probably also by Japanese observers.
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