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Date: 2013-09-12 11:06:12Spaceflight Satellites Asteroids Near-Earth objects Asteroid-impact avoidance Asteroid United States Space Surveillance Network Space debris 243 Ida Planetary science Space Planetary defense | Asteroid Initiative Idea Synthesis Abstracts v2Add to Reading ListSource URL: www.nasa.govDownload Document from Source WebsiteFile Size: 504,84 KBShare Document on Facebook |