Apollo command and service module seperation. View from on board the top of the second stage (S-II) of Apollo 3s Saturn 1B rocket watching the third stage S-IVB J-2 engine burn to carry it and the unmanned Apollo Command and Service Modules into high Earth orbit for subsequent re-entry tests. Credit: NASA | Cosmoknowledge | Facebook

Apollo 11’s Lunar Module and Command Module meet in lunar orbit, shown from two perspectives during the docking sequence. This precision maneuver was essential for bringing the crew home. Follow @spaceeves #Apollo11 #MoonMission #SpaceHistory #NASA | SpaceEve

Right after leaving Earth, Apollo 17’s Command and Service Module America flipped around to dock with the Lunar Module Challenger inside the Saturn upper stage. This sequence shows that approach and capture, the first step toward the last Apollo landing. Follow @spaceeves #Apollo17 #MoonLanding #SpaceHistory | SpaceEve

The Master Alarm indicator of the Apollo Command Module represents a pivotal component of the spacecraft's instrumentation and warning system. This critical feature is designed to promptly alert astronauts to any impending issues or emergencies during their mission, ensuring their safety and enabling timely response. | Concord Aerospace | Facebook