北極光 Northern Lights

The northern lights are caused by collisions between fast-moving particles (electrons) from space and the oxygen and nitrogen gas in our atmosphere. These electrons originate in the magnetosphere, the region of space controlled by Earth’s magnetic field. As they rain into the atmosphere, the electrons impart energy to oxygen and nitrogen molecules, making them excited. When the molecules return to their normal state, they release photons, small bursts of energy in the form of light. [1]

[Google Translate:] 北極光的快速移動的粒子（電子）從空間和我們大氣中的氧和氮的氣體之間的碰撞所造成的。這些電子起源於磁層，地球磁場控制的空間區域。下雨到大氣中，因為它們的電子傳遞氧和氮分子的能量，使它們激發。當分子恢復到正常狀態，他們釋放出光子，小爆發的能量以光的形式。

Astronaut Mike Hopkins, aboard the International Space Station, shared this picture of the northern lights on Oct. 9, 2013, saying "The pic doesn't do the northern lights justice. Covered the whole sky. Truly amazing!": [1]

[Google Translate:] 登上國際空間站，宇航員邁克·霍普金斯大學，分享這幅畫在2013年10月9日的北極光，說：“PIC不會做北極光正義。覆蓋了整個天空。真正驚人的！”

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IMAGE SEARCH - NORTHERN LIGHTS

Link: http://apod.nasa.gov/apod/image/0311/auroraOK_ewoldt_f1.jpg

Link: http://apod.nasa.gov/apod/image/0208/aurperseids_clark_full.jpg

Link: http://www.earthobservatory.nasa.gov/Features/GreenlandBlogKoenig/images/greenland_aurora.jpg

Video:

Aurora Borealis (Northern Lights). Time lapses in Norway. Polarlichter. Der Himmel brennt.

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[1] http://www.nasa.gov/content/northern-lights-viewed-from-the-international-space-station/#.UnrFPxCBmbc