Abell 21, Medusa Nebula
Numéro d’image : 12631915
| Abell 21 is a large, faint, planetary nebula located in Gemini near the border of Canis Minor. It is known as the Medusa Nebula. The hot magnitude 15.9 central star that powers the ionization of the nebula can be seen in the center of the nebula. The Medusa nebula has an apparent brightness of magnitude 14.1 but appears fainter because its light is spread out over a large area. It is located 1, 500 light-years away with an apparent size of 13 x 10 arcminutes, which corresponds to a real size of 4 light-years in space. The Medusa was discovered by George O. Abell in 1955. | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Lodriguss, Gerard |
| Taille de l’image : | 5200 px × 3464 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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