Aurora | Page 3

AURORA Volume 1, Issue May-2015 light+ When a large number of electrons come from the magnetosphere to bombard the atmosphere, the oxygen and nitrogen can emit enough light for the eye to detect, giving us beautiful auroral displays+ This ghostly light originates at altitudes of 100 to more than 400 km+ The color of the aurora depends on which gas oxygen or nitrogen is being excited by the electrons, and on how excited it becomes+ The color also depends upon how fast the electrons are moving, or how much energy they have at the time of their collisions+ High energy electrons cause oxygen to emit green light (the most familiar color of the aurora), while low energy electrons cause a red light+ Nitrogen generally gives off a blue light+ The blending of these colors can also lead to purples, pinks, and whites+ (Nasa.gov,2015) to recognize the scientific phenomenon of aurora , the light of god that showed the pathway to thousands and thousands of lost riders a safe journey to their loved one; on the darkest days of their lives+ The growing scientific understanding of the earth’s electromagnetic environment has made it possible 3