Related by context. Frequent words. (Click for all words.) 72 missions 53 Mission 47 objective 46 endeavor 43 objectives 42 Shuttle Discovery 42 spacecraft 41 peacekeeping mission 41 Gorie 41 expedition 41 efforts 40 quest 40 mandate 40 orbit insertion 40 Missions 40 voyage 39 aim 39 shuttle Atlantis 39 endeavors 39 Zamka 39 purpose 39 Rex Walheim 39 vision 38 CJTF HOA 38 Hubble servicing 38 resupply mission 38 operations 38 International Space Station 38 orbit 38 initiative 38 organization 38 orbiting telescope 38 manned spaceflight 38 Tim Kopra 37 reconnaissance 37 Operation Atalanta 37 warfighters 37 orbiting observatory 37 astronauts 37 effort 37 space shuttle 37 aircrews 37 orbiting laboratory 37 Space Exploration 37 Commander Eileen 37 administrator Sean O'Keefe 37 expeditions 37 Hubble 37 raison d' etre 36 interplanetary spacecraft 36 outreach 36 warfighting 36 task 36 LCROSS mission 36 ISS 36 spaceplane 36 Hubble telescope 36 NEEMO 36 raison d' être 36 ESA astronaut 36 Discovery STS 36 human spaceflight 36 outpost 36 Shenzhou V 36 journey 36 deployment 36 spaceship 36 Eyharts 36 Space Station 35 NASA astronaut corps 35 SOUTHCOM 35 Warfighters 35 planetary missions 35 shuttle missions 35 expeditionary 35 operation 35 NASA 35 payload 35 motto 35 shuttle Discovery 35 #nd Marine Expeditionary 35 Shuttle Atlantis 35 astronaut 35 Systems Mission Directorate 35 missionaries 34 assignment 34 PACAF 34 payloads 34 Shuttle Endeavour 34 Shuttle astronauts 34 crusade 34 Kibo laboratory 34 warrior ethos 34 commitment 34 spacewalk 34 JWST 34 Alpha Magnetic Spectrometer 34 airlifts 34 resupply 34 Atlantis 34 Astrotech