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...
M33 is a spiral galaxy 2.73 million light-years away in the constellation Triangulum, and is the third-largest member of the Local Group of galaxies, behind the Andromeda Galaxy and the...