From Wikipedia: "Omega Centauri ( NGC 5139, or Caldwell 80) is a globular cluster in the constellation of Centaurus that was first identified as a non-stellar object by Edmond Halley in...
NGC 2359, also known as Thor's Helmet, is a large, complex and striking emission nebula located in the constellation Canis Major, about 11,000 light-years away from Earth. The nebula is...