The Gum nebula (Gum 12) is a huge supernova remnant with a distance of 400 parsecs and a width of about 300 parsecs. This section contains two hydrogen-alpha images. One shows the full extent of the Gum nebula and shows a few outlying nebulae in the same field. The second image shows the area near the galactic plane and the many nebulae in that field.
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Our Galactic Region
- Introduction
- Basic plan of the Milky Way
- Surveying the Galaxy
- Velocity
- Mapping hydrogen
- Face-on map overview
- Introduction to the Milky Way Explorer
- The Cloud Hunters
- The Star Sweepers
- Things Unseen: The Westerhout radio sources
- The Avedisova catalog: A real Hitchhiker's Guide to the Galaxy?
- Avedisova glossary
- Strange new worlds
- Commentary on the Galactic Plane
- Hydrogen-alpha commentary
- Fragments