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BLUE AURORAS: Northern Lights are usually green, and sometimes red. Those are the colors produced by oxygen when it is excited by electrons raining down from space. Micha Bäuml of Straumfjord, Norway, witnessed an appariton of aurora-blue.
Exploring Northern Lights with Kids through Art and Music
A picture from the International Space Station, provided Saturday by Dutch astronaut Andre Kuipers, shows southern lights between Antarctica and Australia. Photo by Reuters / Andre Kuiper / ESA / Nasa / Press Release