Showing posts with label aurora borealis. Show all posts
Showing posts with label aurora borealis. Show all posts

Wednesday, 25 January 2012

Aurora borealis




The Aurora borealis is a natural light display in the sky, particularly in the Arctic and Antarctic regions. The Aurora borealis is caused by the collision of energetic charged particles with atoms in the high altitude atmosphere. The charged particles originate in the magnetosphere and solar wind and, on Earth, are directed by the Earth's magnetic field into the atmosphere.