The Carina Nebula or Eta Carinae Nebula (catalogued as NGC 3372; also known as the Great Carina Nebula) is a large, complex area of bright and dark nebulosity in the constellation Carin...
In 1054, Chinese astronomers noticed a "guest star" that was visible in the daytime sky for about a month. The "guest star" they saw was a supernova explosion that produced the Crab Neb...