For astronauts traveling in the Lunar orbit a manned spacecraft and the lunar surface and from between the spacecraft flight. "Apollo" was manned lunar module spacecraft are irregularly shaped, 9 meters high, 4 meters in diameter and weighs 14 5 ~ 16 吨. Consists of two parts: (1) declining stage. A lunar rover, instruments and equipment and drop the engine; (2) ascending. There can carry two astronauts sealed pressurized cabin equipment and increase the engine. When the spacecraft reached lunar orbit, the astronauts will take the lunar module from the spacecraft, landing face down in the month. Activities of the lunar surface the astronauts completed the task after they dropped segment as the launch pad, driving up segment on track to return in the ring waiting for the spacecraft rendezvous and docking, will also abandon the riser, take the spacecraft back to Earth.