Pioneer 10 Pioneer 10 Pioneer 10 (originally designated Pioneer F) is an American space probe, launched in 1972 and weighing , that completed the first mission to the planet Jupiter. Thereafter, "Pioneer 10" became the first of five artificial objects to achieve the escape velocity that will allow them to leave the Solar System. This space exploration project was conducted by the NASA Ames Research Center in California, and the space probe was manufactured by TRW Inc. "Pioneer 10" was assembled around a hexagonal bus with a diameter parabolic dish high-gain antenna, and the spacecraft was spin stabilized around the axis of
The Tenth Planet last episode remains missing, although several short clips, including the regeneration sequence, have been discovered intact. In 2013, "The Tenth Planet" was released on DVD with a full-length animated reconstruction of its missing footage. The Doctor and his companions Ben and Polly arrive in the TARDIS at the South Pole in the year 1986. Nearby they find the Snowcap Base, a space tracking station commanded by General Cutler. The base is supervising the mission of the "Zeus IV" spaceship, running a routine probe on the Earth's atmosphere. The spaceship is drawn off-course by an unknown force, and Snowcap monitoring staff