The Apollo spacecraft

Apollo Command Module Cutaway

The command module was a stubby, conical craft almost entirely covered with a heatshield that was thickest across its base to sustain most of the punishment of re-entry. The outer rim of the cone was packed with small tanks, thrusters, various antennae and two small ports for the ejection of waste water and urine. The apex of the cone had a removable probe mechanism to enable it to dock with the Apollo lander and a tunnel through which the crew could transfer between the two spacecraft....