Aurora Over An Alaskan River
by Chris Madeley/science Photo Library
Title
Aurora Over An Alaskan River
Artist
Chris Madeley/science Photo Library
Medium
Photograph - Photograph
Description
Silhouettes of a mountain in the Brooks Range, Alaska with a colourful display of the northern lights. The Aurora Borealis is a natural light phenomena that is visible in the night sky, usually only at polar 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.
Uploaded
October 15th, 2019
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