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Phenomena called ‘Steve’ and ‘picket fence’ are masquerading as auroras, graduate student argues
The purple and white emissions at the top are referred to as “Steve,” while the green emissions are called “picket fence.” The rare phenomena, which are distinct from the typical aurora, often occur together and may be caused by similar conditions at the edge of space. The photo was taken looking south over Berg Lake toward Mt. Robson in the Canadian Rockies, British Columbia, Canada. Courtesy of Robert Downie, robertdowniephotography.com
While auroras occur at high latitude, the associated phenomena Steve and the picket fence occur farther south and at lower altitude. Their emissions also differ from aurora...
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