THOMAS HEATON / SCIENCE PHOTO LIBRARY THOMAS HEATON / SCIENCE PHOTO LIBRARY
Aurora borealis, Druridge Bay. Rare view of northern lights over Druridge Bay in Northumberland, UK. The aurora borealis is a coloured light display (the northern lights) that is visible in the night sky, usually only at high latitudes. It occurs when charged and energetic particles from the Sun (the solar wind) are drawn by Earth's magnetic field to the polar regions. Hundreds of kilometres up, they collide with gas molecules and atoms, causing them to emit light. Photographed on 16 July 2012.
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