Earth's magnetic field. Ultraviolet image of cool plasma (ionised gas,blue) trapped in the Earth's magnetic field. The Earth is at centre. The small faint inner blue ring at centre is the aurora borealis (northern lights) encircling the North Pole. The Sun is out of frame towards the top right corner. At upper left a hook-shaped tail of plasma is seen arcing towards the Sun. The night side of the Earth (lower left) has a lower plasma density than the sunward side. This image was taken by the Extreme Ultraviolet Imager (EUV) on board the Imager for Magnetopause to Aurora Global Exploration (IMAGE) spacecraft on 11th August 2000 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NASA |
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