The base of the jovial groove as the little group walked was a lilting, repeating riff on the kora, the 21-string harp-lute that a musician played with its base propped against his torso, plucking with his thumbs. â
The Vanguard team was still working on a test vehicle (TV-2) designed to test the first stage of the rocket when they learned of the launch of the world's first artificial satellite, Sputnik I, by the USSR on October 4, 1957. On December 2, the Department of Defense announced the imminent launch of TV-3.
Apollo 18 was never launched. Apollo missions 18, 19 and 20 were planned but cancelled to cut costs and also to free one Saturn V rocket to launch Skylab. The final Apollo mâ¦ission was Apollo 17, which was launched on the 7th of December, 1972.