• Copernicus and the Lunar Alps
  • North American Nebula: Obviously named for its appearance
  • M42 (NGC 1976) (emission nebula) The Orion Nebula is arguably the most famous nebula of all. This luminous and exciting object occupies much of the constellation Orion and lies at a dsitanceof about 1300 light years from Earth. It is an important stellar birthplace; some of the stars are believed to be less than100,000 years old..