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8/4/2019 41-Aurora Borealis (Northern Lights)
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mailto:[email protected]://en.wikipedia.org/wiki/Boreashttp://www.exploratorium.edu/learningstudio/auroras/http://www.oso.noaa.gov/poes/http://www.sec.noaa.gov/http://www.thursdaysclassroom.com/index_18may00.htmhttp://www.eagle.ca/~matink/themes/Physphen/aurora.htmlhttp://en.wikipedia.org/wiki/Aurora