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Date: 2014-04-28 14:13:57Asteroids Planetary defense Near-Earth objects Asteroid-impact avoidance Asteroid Gravity tractor Space exploration Lagrangian point Potentially hazardous object Planetary science Spaceflight Space | Asteroid Retrieval FeasibilityAdd to Reading ListSource URL: www.kiss.caltech.eduDownload Document from Source WebsiteFile Size: 979,44 KBShare Document on Facebook |