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Date: 2001-09-04 13:21:43Planetary science Space plasmas Plasma physics Electrical phenomena Aurora Io IMAGE Polar Spacecraft Spaceflight Space | ;;5RXQGWKH&ORFN$XURUD6DWHOOLWH0RQLWRULQJ Introduction: During the 1990’s, NASA has placed research satellites in orbit around the earth to keep the polar regions under almost constant surveillance for signs ofAdd to Reading ListSource URL: image.gsfc.nasa.govDownload Document from Source WebsiteFile Size: 85,46 KBShare Document on Facebook |