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Date: 2015-02-04 02:17:53Planetary defense Near-Earth object Arecibo Observatory Asteroid Moon Catalina Sky Survey Comet (185851) 2000 DP107 TU24 Planetary science Astronomy Space | 01a - US - Slides - US NEOO STSC BriefJohnsonAdd to Reading ListSource URL: www.unoosa.orgDownload Document from Source WebsiteFile Size: 1,62 MBShare Document on Facebook |