On Tuesday, January 9, 1968, the Surveyor 7 space probe, the fifth and
final spacecraft of the Surveyor series, made a soft landing on the Moon,
marking the end of the American series of unmanned explorations of the
lunar surface. The primary objectives of the Surveyor program, a series
of seven robotic lunar soft landing flights, were to support the coming
manned Apollo landings. The Surveyor program had a total price tag
of $469 million.