National Aeronautics and Space Administration Planetary Protection Office

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Solar System Bodies

List of Missions

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International Policy

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History of Planetary Protection

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Glossary of Terms



Solar System Missions

Missions that have been, are, or will be subject to planetary protection requirements are listed in the following sortable table. Missions prior to 1984 are listed using current category definitions, which includes the Pioneer, Mariner, Apollo, Rangers 1-9, Surveyor, Viking, and Voyager missions. International missions are also provided for reference purposes, including Chang'e-3, ISRO Mars Orbiter Mission, Mars Express, Hayabusa 1 & 2, Chandrayaan-1, and the ExoMars missions; for many of these missions the presumed planetary protection category is listed.

Table can be sorted by clicking on the headers.

Additional information is found on the NASA Science missions page.

Table is currently under development. Please send any corrections

Category Planetary Body Mission Mission Status
II Asteroid Eros NEAR-Shoemaker Completed
II Comets Tempel 1 & Hartley 2 Deep Impact/EPOXI Ongoing
II Comets Encke, Schwassmann-Wachmann-3 and d'Arrest. CONTOUR Completed
II Jupiter Galileo Completed
II Jupiter Juno Ongoing
II Jupter/Saturn Pioneer 10&11 Completed
II Jupiter/Saturn/Heliosheath Voyager Ongoing
II Mercury (Venus fly-by) MESSENGER Ongoing
II Moon Chandrayaan-1/ISRO (M3) Completed
II1 Moon Chang'e-3/CNSA Ongoing
II Moon Clementine Completed
II Moon Grail Completed
II Moon LADEE Ongoing
II Moon Lunar Prospector Completed
II Moon Lunar Reconnaissance Orbiter Ongoing
II Moon Ranger 1-9 Completed
II Moon Surveyor Completed
II Pluto/Charon New Horizons Completed
II Saturn Cassini-Huygens Ongoing
II Sun Solar Orbiter Collaboration Planning Phase
Sun Ulysses Completed
II Venus Magellan Completed
II Venus Pioneer-Venus Completed
III (II-comet) Comet Borelly Deep Space 1 Completed
III (II-comet) Comet C-G, Asteroid Lutetia Rosetta Ongoing
III Mars ExoMars Trace Gas Orbiter Planning Phase
III Asteroids Vesta & Ceres (Mars flyby) Dawn Ongoing
III Mars Mars Climate Orbiter Failed
III Mars Mars Express/ESA (ASPERA-3) Ongoing
III Mars Mars Global Surveyor Completed
III Mars Mars Observer Failed
III Mars Mars Odyssey Ongoing
III1 Mars Mars Orbiter Mission/ISRO Ongoing
III Mars Mars Reconnaissance Orbiter Ongoing
III Mars MAVEN Ongoing
III Mars Viking 1-2 Orbiters Completed
III Mercury, Venus, Mars Mariner Missions Completed
IVa Mars Deep Space 2 Failed
IVa Mars InSight Planning Phase
IVa Mars Mars Pathfinder Completed
IVa Mars Mars Polar Lander Failed
IVa Mars Mars Science Laboratory Ongoing
IVa Mars MER Opportunity Ongoing
IVa Mars MER Spirit Completed
IVb Mars ExoMars/ESA (Rover, 2018) Planning Phase
IVb Mars Viking 1-2 Landers Completed
IVc Mars Mars Phoenix Lander Completed
V (restricted) Moon Apollo 11, 12, 14 Completed
V (unrestricted) Asteroid 25143 Itokawa Hayabusa/JAXA Completed
V (unrestricted) Asteroid 1999 JU3 Hayabusa 2/JAXA Planning Phase
V (unrestricted) Asteroid 1999 RQ36 OSIRIS-REx Planning Phase
V (unrestricted) Comets Wild 2 & Tempel 1 Stardust NExT Ongoing
V (unrestricted) Heliosphere Genesis Completed
V (unrestricted) Moon Apollo 15-17 Completed
1. Presumed category.