Editing Pioneer program (section)

=== Outer Solar System missions ===
[[File:Outersolarsystem-probes-4407b.svg|thumb|400px|Map showing location and trajectories of the ''Pioneer 10'' (blue), ''Pioneer 11'' (green), ''[[Voyager 1]]'' (purple) and  ''[[Voyager 2]]'' (red) spacecraft, as of April 4, 2007]]
[[File:Pioneer10-plaque.jpg|thumb|right|The [[Pioneer plaque]] attached to Pioneers ''10'' and ''11'']]
* ''[[Pioneer 10]]'' (Pioneer F) –  [[Jupiter]], [[interstellar medium]], launched March 1972
* ''[[Pioneer 11]]'' (Pioneer G) –  [[Jupiter]], [[Saturn]], [[interstellar medium]], launched April 1973
* [[Pioneer H]]  – proposed out-of-[[ecliptic]] mission for 1974, never launched. Would have used flight spare for Pioneers 10 and 11.<ref>{{cite web |title= Pioneer H, Jupiter Swingby Out-of-the-Ecliptic Mission Study |url= https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930073120_1993073120.pdf |date= 20 August 1971 |access-date= 7 July 2017 |archive-date= 14 May 2010 |archive-url= https://web.archive.org/web/20100514075504/https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19930073120_1993073120.pdf |url-status= dead }}</ref>