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Date: 2013-12-02 07:29:26Spacecraft propulsion Interstellar travel Discovery program Japanese space program Electric sail Solar sail NEAR Shoemaker Asteroid-impact avoidance Japan Aerospace Exploration Agency Spaceflight Space technology Spacecraft | Add to Reading ListSource URL: www.electric-sailing.fiDownload Document from Source WebsiteFile Size: 648,73 KBShare Document on Facebook |