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...
The Gum Nebula is an emission nebula located in the southern constellations Vela and Puppis. With an apparent diameter of 40°, it is the nebula with the largest angular extent in the ni...