Aurora Borealis Or Northern Lights Over A Forest #1
by Jack Finch/science Photo Library
Title
Aurora Borealis Or Northern Lights Over A Forest #1
Artist
Jack Finch/science Photo Library
Medium
Photograph - Photograph
Description
Aurora borealis. Aurora borealis or Northern Lights display over a forest. Aurorae are caused by the interaction between energetic charged particles from the Sun and gas molecules in the upper atmosphere (about 100 kilometres up). A stream of charged particles, called the solar wind, flows out into space continuously from the Sun at speeds of 400-500 kilometres per second. On reaching Earth the charged particles are drawn by Earth's magnetic field to the poles, where they collide with the upper atmosphere. The colour produced by the effect depends upon the particles' energy. Photographed at Fairbanks in Alaska, USA.
Uploaded
October 3rd, 2018
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