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Date: 2002-09-24 14:39:18Planetary science Astronomy Space science Space plasmas Plasma physics Aurora Space weather K-index Geomagnetic storm Electromagnetism Physics Geomagnetism | THE NORTHERN LIGHTS A Grade 7-8 guide to understanding the Aurora Borealis through math, geometry and reading activities. IMAGEAdd to Reading ListSource URL: image.gsfc.nasa.govDownload Document from Source WebsiteFile Size: 446,88 KBShare Document on Facebook |