January 29, 1964 (the twelfth lunar month 15) mao, Saturn rocket will be the heaviest satellite launched into space.

1964 1 29, a Saturn rocket, a 10-ton satellite launched into orbit, and this is by far the heaviest. That the United States for the first time over the Soviet Union. Six years ago, the first U.S. satellite into orbit weighs 31 pounds. Today's launch grand broadcast by state television. Saturn rocket the key to success lies in the third stage uses liquid hydrogen fuel. This first test was quite good. Planned, three months later, the Saturn rocket will weigh up to 10 tons of the generic model of the Apollo lunar landing spacecraft into orbit.