Auroras

A celebration of nature's spectacular lightshows, and a visual feast documenting the kaleidoscopic colors that decorate the sky.For millennia, humans have been fascinated with the ghostly green and red curtains of light that shimmer across the heavens on dark, clear nights. Barely 100 years ago, scientists finally learned that an aurora is created when the Earth's magnetic field is bombarded with charged particles from the sun. Ancient peoples saw these displays as souls of the dead, the torches of the spirits and as harbingers of war.

Collisions with nitrogen result in bluish colors. When the charged particles collide with oxygen in the atmosphere, auroras with yellows, greens and reds appear. However, our understanding of the physics behind auroras has not detracted from their wonder.Auroras is filled with 80 photographs of one of nature's greatest