Snið:Geimkönnunaráætlanir NASA

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s r b Geimkönnunaráætlanir NASA
Virkar	Discovery Explorer Flagship Lunar Precursor Mars Exploration Mars Next Generation New Frontiers Small Explorer Voyager
Lokið	Apollo Lunar Orbiter Mariner Mars Scout Mars Surveyor '98 MESUR Pioneer Planetary Observer Ranger Surveyor Viking
Hætt við	Constellation Mariner Mark II New Millennium Planetary Grand Tour Prometheus-áætlunin Voyager (Mars)