NGC 7009 Hubble

Freo Nebula

A planetary nebla with a brigght star at the center of a dark cavity. This cavity is surrounded by a rim of dense, luminous gas.

The cavity and rim are trapped inside a barrel of the star's former outer layers. At either end of this barrel, there are handles, joined to the tips of the cavity inside by long jets of low-density gas.

From Earth, this same phenomenon can be observed in NGC 7009 (the Saturn Nebula.)

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