Birth of planetary system
Numéro d’image : 11885450
| Artwork representing the formation of a planetary system around a star based upon the nebular hypothesis. According to this model a solar system derives from the contraction of a rotating disc- shaped nebula mainly formed by hydrogen,helium and dust grains. The contraction may be triggered by shock waves from a nearby supernova explosion or simply by the mutual gravitational attraction of the contents of the nebula. The central part of the nebula collapses into a protostar. Collisions between dust grains in the outer regions of the nebula lead to the formation of small bodies (few kilometres across),which then by accretion will develop into planets | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Shostak, Dr. Seth |
| Taille de l’image : | 3199 px × 4203 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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