Planetary defense

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401	Untitled Add to Reading List Source URL: abundantplanet.org Language: English - Date: 2009-02-27 18:59:18 Space colonization Space technology Planetary defense Asteroids Asteroid mining Asteroid-impact avoidance Asteroid Near-Earth object Colonization of the Moon Space Planetary science Spaceflight
402	PDF Document Add to Reading List Source URL: elib.dlr.de Language: English - Date: 2011-06-09 04:25:37 Planetary defense Asteroid-impact avoidance Asteroids Earth 99942 Apophis Don Quijote Gravity tractor Lander Space exploration Spaceflight Space Astronomy
403	PDF Document Add to Reading List Source URL: multimedia.seti.org Language: English - Date: 2011-04-06 19:43:07 Planetary defense Asteroid Spaceflight Near-Earth object NEAR Shoemaker C-type asteroid Planetary science Spacecraft Space technology
404	PDF Document Add to Reading List Source URL: planetary.s3.amazonaws.com Language: English - Date: 2008-02-25 18:50:54 99942 Apophis European Space Agency Asteroids Houyi Don Quijote Asteroid-impact avoidance Fobos-Grunt CubeSat Asteroid Spaceflight Space Planetary defense
405	PDF Document Add to Reading List Source URL: img-srv.dtcbuilder.com Language: English - Date: 2009-03-12 18:20:49 Meteoroids Planetary defense Space science TC3 Spaceflight Impact event Tunguska event Meteorite Meteor shower Astronomy Space Planetary science