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 beautiful spiral galaxy NGC 3521 is only 35 million light years away from us, in the constellation of Leo. Relatively bright in the Earth's sky, NGC 3521 is easily visible in small ...