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Date: 2007-07-27 20:45:13Project Constellation Planetary defense Manned spacecraft Vision for Space Exploration Space exploration Asteroid-impact avoidance Spacecraft Near-Earth object Orion Spaceflight Human spaceflight Exploration of the Moon | template for two-page abstracts in Word 97 (PC)Add to Reading ListSource URL: www.digitalspace.comDownload Document from Source WebsiteFile Size: 26,85 KBShare Document on Facebook |