Date: 2014-03-19 11:59:28Asteroids Planetary defense 99942 Apophis Asteroid-impact avoidance Gravitational keyhole Near-Earth object Impact event Asteroid Rusty Schweickart Planetary science Astronomy Space | | Executive Summary Workshop on the NEO Mission Planning and Operations Group[removed]October 2010 I. Introduction The Secure World Foundation, the Association of Space Explorers, and the European SpaceAdd to Reading ListSource URL: www.swfound.orgDownload Document from Source Website File Size: 368,33 KBShare Document on Facebook
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