Moon landing Early U.S. unmanned lunar missions (1958–1965) Early U.S. unmanned lunar missions (1958–1965)

| U_S_mission | Mass_kg | Launch_vehicle | Launched | Mission_goal | Mission_result |
|---|---|---|---|---|---|
| Pioneer 0 | 38 | Thor-Able | 17 August 1958 | Lunar orbit | Failure – first stage explosion; destroyed |
| Pioneer 1 | 34 | Thor-Able | 11 October 1958 | Lunar orbit | Failure – software error; reentry |
| Pioneer 2 | 39 | Thor-Able | 8 November 1958 | Lunar orbit | Failure – third stage misfire; reentry |
| Pioneer 3 | 6 | Juno | 6 December 1958 | Lunar flyby | Failure – first stage misfire, reentry |
| Pioneer P-1 | 168 | Atlas-Able | 24 September 1959 | Lunar orbit | Failure – pad explosion; destroyed |
| Pioneer P-3 | 168 | Atlas-Able | 29 November 1959 | Lunar orbit | Failure – payload shroud; destroyed |