
This stunning picture could well be the best ever taken of an aurora. It was snapped by German photographer Sebastian Voltmer and provides a truly dazzling atmospheric sight. A professional astronomer writing for Nasa’s picture of the day site – APOD – said: ‘The wide angle image, horizontally compressed, captured an unexpected auroral display that stretched across the sky one month ago over eastern Norway.’
Auroras are caused by the ionised solar particles flung at the earth by flares from the Sun becoming imprisoned by Earth’s magnetic field, exciting the gases in the atmosphere and emitting bursts of energy in the form of light.
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