Saturn VThe Saturn V rocket was the largest rocket ever used by NASA. It was used to lift the large mass needed to send astronauts on the moon and return them safely. Saturn V rockets launched all of the Apollo moon missions, and several Earth orbit missions.
Most of the Saturn V booster's large size consists of tanks for the fuel and for the oxidizer used in all three Saturn V stages.
The powerful F-1 engines of the first stage burn kerosene to produce a combined thrust of 7.5 million pounds.
The fuel for the J-2 engines of the two upper stages is liquid hydrogen. The combined thrust of the second stage's five engines is just over a million pounds, or five times that of the third stage's single J-2 engine.