RISP satellite spacecraft; American lunar flyby probe. Study 1959. The Recoverable Interplanetary Space Probe was a 1957 proposal of the MIT Instrumentation...
Massachusetts Institute of Technology, Instrumentation Laboratory, "A Recoverable Interplanetary Space Probe," rpt. R-235, 4 vols., 1 July 1959. 26. JPL...
"Lunar Reconnaissance," exploring the moon by television camera and by a soft landing of an instrumented; Recoverable Interplanetary Space Probe...