Dec 21 1959
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(New page: A guideline letter was sent to William H. Pickering, Director of the Jet Propulsion Laboratory (JPL), from Abe Silverstein, Director of NASA's Off...)
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A guideline letter was sent to William H. Pickering, Director of the Jet Propulsion Laboratory (JPL), from Abe Silverstein, Director of NASA's Office of Space Flight Development, outlining a program of five lunar spacecraft flights, intended primarily to obtain information on the lunar surface. JPL was requested to conduct tradeoff studies on spacecraft design and mission. The scientific objective would be to "acquire and transmit a number of images of the lunar surface." In addition, JPL was asked to "evaluate the probability of useful data return from a survivable package incorporating . . . a lunar seismometer of the type . . . being developed for NASA." This letter provided the formal basis for what was subsequently the Ranger program.
U.S. Congress, House, Subcommittee on NASA Oversight of the Committee on Science and Astronautics, Investigation of Project Ranger, Hearings, 88th Congress, 2nd Session (1964), p. 56.
