Total solar eclipse
Numéro d’image : 11883834
| The large,shining corona of the Sun,seen during the total solar eclipse of 11 July 1991 from Baja Caifornia,Mexico. The visible corona is in fact the overlapping K-corona and F-corona. Usually it is only visible during eclipses,as the light from the Sun's photosphere drowns it out. The K-corona consists of fast-moving free electrons at a temperature of about 2 million Kelvin,at heights of about 75,000km above the Sun's surface. The F- corona extends for many million km,and consists mainly of slow-moving particles of cosmic dust. The shape of the corona changes during the cycle of solar activity under the infuence of the Sun's magnetic field | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / REV. RONALD ROYER |
| Taille de l’image : | 4232 px × 3459 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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