A nebula
A nebula is an interstellar cloud of matter, usually gases (such as hydrogen) and dust. Many nebulae are stellar nurseries.
Nebular classes
Nebular categories
- Dark nebula
- Dark-matter nebula
- Dichromatic nebula
- Emission nebula
- Inversion nebula
- Micro-nebula
- Planetary nebula
- Proto-nebula
- Protostellar nebula
- Reflection nebula
- Spontaneous proto-nebula
- Stellar nursery
See also
- List of astronomical objects
- Nebula-class starship