Rocket: vehicle equipped with a jet engine and used for space travel.
Launch escape system: tower that enables the astronauts to retreat in case of danger.
Lunar module: means of transport for traveling on or around the moon.
Liquid hydrogen: part of the rocket containing reserves of liquid hydrogen.
J-3 engine: part of the third stage that detaches it from the second stage.
J-2 engine: part of the second stage that detaches it from the first stage.
Liquid oxygen: part of the rocket that contains reserves of liquid oxygen for use as engine fuel.
Kerosene: part of the rocket that contains reserves of kerosene for use as engine fuel.
Stabilizing fin: part of the rocket that keeps it steady during takeoff.
Nozzle: part of the rocket through which flowing fluid enables it to gain speed.
F-1 engine: part of the rocket that enable it to take off.
First stage: part of the rocket closest to the ground during takeoff.
Inter-stage: part of the rocket connecting the first and the second stages.
Second stage: second part of the rocket from the ground.
Third stage: part of the rocket that carries the payload.
Payload: that which is to be in space.