Surveyor 4

Surveyor 4 was the fourth probe by the U.S. space agency NASA as part of the Surveyor program. The Surveyor program was the successor of the Ranger program. The results of the program should prepare the first manned lunar landing. Surveyor 4 should heal land on the moon and send images and data from there to the earth.

Mission

Surveyor 4 launched on 14 July 1967 on an Atlas - Centaur rocket from the launch pad LC - 36 of the Cape Canaveral Air Force Station. After an uneventful flight, the probe reached the moon on July 17, 1967. About 3 minutes before the planned touchdown on the lunar surface tore down the radio signals. Further efforts to make contact failed. It is suspected that the probe exploded on the landing approach due to a malfunction.

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