Penerbangan Bolak-balik angkasa lepas Discovery

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WikiPedia: Bolak-balik angkasa lepas Discovery http://www.exploration-space.com/16-apr-2007-nasa.... http://www.funnycoolstuff.com/2007/04/06/amazing-s... http://www.maniacworld.com/space-shuttle-night-lau... http://science.ksc.nasa.gov/shuttle/resources/orbi... http://www.nasa.gov/centers/kennedy/shuttleoperati... http://www.nasa.gov/mission_pages/shuttle/flyout/d... http://www.nasa.gov/pdf/488540main_DISCOVERY_facts... http://www.nasa.gov/returntoflight/ http://www.spacetelescope.org/about/history/servic... http://www.spacetelescope.org/about/history/servic...