Cygnus Loop supernova remnant
Numéro d’image : 11886129
| Cygnus Loop supernova remnant,optical image. This is a series of shells of gas cast off by a supernova,the explosive death of a massive star. The loop has an apparent diameter four times the width of the full Moon. The shells of gas impact the interstellar medium at great speeds,compressing it into a plasma and causing the gases to emit light. Light emitted by different ionised gases is colour coded: sulphur is red,hydrogen is green and oxygen is blue. It is thought that the supernova responsible for this remnant occurred between 5-8000 years ago. Its distance is uncertain,but is thought to be between 1400-2600 light years. It lies in the constellation Cygnus | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Croman, Russell |
| Taille de l’image : | 3913 px × 2585 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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