NGC 1501 Blue Oyster Nebula

The Blue Oyster is a planetary nebula, representing an aging star that has shed its outer layers. Unlike the other planetary nebula, however, the central star of the Blue Oyster is not a typical white dwarf, but has a
spectra more like a Wolf-Rayet Star.  In photographs, the magnitude 14.5 central star suggests a pearl inside a blue oyster.

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