# Bubble Nebula

> emission nebula in the constellation Cassiopeia

**Wikidata**: [Q725471](https://www.wikidata.org/wiki/Q725471)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Bubble_Nebula)  
**Source**: https://4ort.xyz/entity/bubble-nebula


## References

1. SIMBAD
2. VizieR
3. [Source](http://cseligman.com/text/atlas/ngc76.htm#7635)
4. Freebase Data Dumps. 2013
5. [Source](https://www.constellation-guide.com/bubble-nebula-ngc-7635/)
6. [Source](http://spider.seds.org/ngc/revngcic.cgi?NGC7635)
7. A CGPS look at the spiral structure of the outer Milky Way. I. Distances and velocities to star-forming regions
8. A survey of radio HII regions in the northern sky