Phantom of the Opera is an emission nebula in the constellation of Cassiopeia with a diameter of 77 light years and located at a distance of 8,000 light years from Earth. The hydrogen nebulosity and dark areas combine to give an uncanny resemblance to the phantom of the opera mask.
Phantom of the Opera is an emission nebula in the constellation of Cassiopeia with a diameter of 77 light years and located at a distance of 8,000 light years from Earth. The hydrogen nebulosity and dark areas combine to give an uncanny resemblance to the phantom of the opera mask.
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