Friday, September 24, 2010

APOD 1.4

This photo took place in Tromso, Norway.  Shown is an aurora which is a spectacular multicolored view in the sky.  In more scientific terms, auroras are caused by collisions between charged particles from the magnetosphere and air molecules high in Earth's atmosphere.  While they look like moonlit clouds, they only add light to the sky and do not block the stars in the background from being seen.  Auroras are often referred to as northern lights in the northern hemisphere.  When viewing from space, these auroras appear to glow in X-ray ultraviolet light.  Amazingly, some auroras can be predicted.  This is possible because they might occur a few days after a powerful magnetic event has been seen on the Sun.  I hope to be able to see an aurora at some point in my lifetime because they seem incredible!

No comments:

Post a Comment