Optical image of the Sun showing a sunspot
Numéro d’image : 11884065
| The Sun. View of the whole Sun showing an area of sunspots. The Sun is a massive nuclear fusion reactor in which hydrogen atoms fuse to form helium and release heat & light energy. This energy radiates and convects out to the visible surface (photosphere). Its constant output of energy means that the Sun loses about 4 million tons of mass each second. The area of sunspots (dark,at upper right) corresponds to an area of cool,dark gas in the Sun's photosphere. This cool region results from intense,localised magnetic fields,which suppress the convection currents that bring hot gases to the surface | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / PROFESSOR JAY PASACHOFF |
| Taille de l’image : | 3799 px × 2605 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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