section_path: Early U.S. uncrewed lunar missions (1958–1965)
section_name: Early U.S. uncrewed lunar missions (1958–1965)
paragraph_text: Early U.S. uncrewed lunar missions (1958–1965)
  
  The U.S. was not able to reach the Moon with the Pioneer and Ranger programs, with fifteen consecutive U.S. uncrewed lunar missions from 1958 to 1964 failing their primary photographic missions. However, Rangers 4 and 6 successfully repeated the Soviet lunar impacts as part of their secondary missions.
  
  Three U.S. missions in 1962 attempted to hard land small seismometer packages released by the main Ranger spacecraft. These surface packages were to use retrorockets to survive landing, unlike the parent vehicle, which was designed to deliberately crash onto the surface. The final three Ranger probes performed successful high altitude lunar reconnaissance photography missions during intentional crash impacts between 2.62 and 2.68 kilometres per second (9,400 and 9,600 km/h).