High-resolution spectral observations let us understand how the upper atmosphere is affected by auroraĪ Brief History of Understanding the Auroraĭescriptions of aurora, or the northern lights, go as far back as written history. Observations of color balance in aurora can provide us with information about the physical processes in the near Earth space that cause aurora. This article discusses the mechanisms that are responsible for the colors of the aurora. The aurora has fascinated observers at high latitudes for centuries, but only recently have we begun to understand the processes that cause it. Green curtains and rays above the Brooks Range and Gates of the Arctic National Park.
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