Semiannual Report to the Congress, Volume 5

aerodynamic Aeronautics and Space Air Force altitude antenna Apollo Astronautics Atlas-Agena Atlas-Centaur atmosphere Aviation awarded booster Calif camera Cape Canaveral capsule contract contractor cosmic diameter Division earth Electric electron equipment experimental experiments Explorer Explorer XI facilities Goddard Space Flight Institute of Technology instrumentation interplanetary investigation ionosphere Jet Propulsion Laboratory June 30 landing Langley Research Center launch vehicle liquid lunar magnetic field Mariner Marshall Space Flight micrometeoroids miles Missile missions moon NASA Headquarters NASA launched NASA's Nike-Cajun North American Aviation nuclear operation orbit Perigee pilot planetary planned Post Office Box pounds Project Apollo Project Mercury propellant radiation Ranger Redstone report period research and development Research Center rocket engine Saturn scientific Scout sensors solar cells sounding rocket Space Flight Center spacecraft speed technical techniques temperature Thor-Agena thrust tion TIROS tracking transmitted University upper stage velocity Venus Wallops Station Washington 25 Woomera