Illustration showing evolution of a high mass star
Numéro d’image : 11886001
| Illustration showing the evolution of a high-mass star,ending in a supernova explosion. Stage one (left) shows a normal blue star,powered by hydrogen fusion. As the hydrogen fuel in the core becomes depleted,the helium 'ash' contracts,heats up and ignites. The higher temperatures of helium-burning cause the star to expand & become a red giant (stage 2). In a similar way,successive heavier elements begin to burn in shells around the core. Eventually the core is converted to iron & the fusion ceases. Both the core & atmosphere then collapse (3). When nuclear density is reached,the core rebounds (4),sending out a shock wave which tears the star apart | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Bensusen, Sally |
| Taille de l’image : | 8015 px × 2195 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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