Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.iki.rssi.ru/mirrors/stern/Education/Slides/9-aurora.htm
Дата изменения: Unknown
Дата индексирования: Fri Dec 21 22:26:43 2007
Кодировка:

Поисковые слова: images
The Exploration of the Earth's Magnetosphere"

The Polar Aurora ("Northern Lights")

  Aurora on 6 January 1998 (Dick Hutchinson ©)

           

The ribbons of the aurora are caused by fast electrons accelerated along magnetic field lines, which guide them into the high polar atmosphere.

Their glow arises around 100 km (60 miles), when they hit the denser atmosphere,.

Learn more on the web page   Secrets of the Polar Aurora.