Abell 78
# Abell 78

Abell 78 is a planetary nebula located in the constellation of Cygnus. It has a fainter halo consisting mostly hydrogen, and an inner elliptical ring that is mostly made of helium.

The central star of the planetary nebula has a spectral type of [WC5], similar to that of a carbon-rich Wolf–Rayet star.

## Gallery

* An unusual type of Planetary Nebula
