Deep-Sky Object
Stellar Bubble
An ISM bubble blown by a single massive star.
A cavity of hot gas surrounded by a swept-up shell, blown into the ISM by the powerful wind of a massive star.
Overview
A cavity of hot gas surrounded by a swept-up shell, blown into the ISM by the powerful wind of a massive star.
See also
Wolf–Rayet Nebula
A bubble blown by a Wolf–Rayet star's wind.
Supernova Remnant
The expanding wreckage of a dead star.
Bok Globule
A small, dark dust cocoon harbouring a young star.
Superbubble
A giant cavity blown by many supernovae.
OB Association
A loose group of hot massive stars.
Round Planetary Nebula
Shell of ionized gas expelled by a dying low-to-intermediate-mass star.