cometary nebula

cometary nebula

(kom -ĕ-tair-ee) A fan-shaped reflection nebula whose illuminating star lies at the vertex of the fan. Hubble's variable nebula is an example.

cometary nebula

[′käm·ə‚ter·ē ′neb·yə·lə]
(astronomy)
A fan-shaped reflection nebula that resembles a comet in appearance.