Remembering Apollo 7: Milestones, mutiny and the mission that paved the way for the Moon landing

Attached to the Command Module was the Service Module, which was a metal cylinder 24.8 ft (7.6 m) long, 12.8 ft (3.9 m) wide, and weighed 54,060 lb (24,520 kg). This unpressurized module contained the main engine and propellant tanks for the trip to the Moon and back, being cast off just before the final reentry into the Earth’s atmosphere. In addition, there were fuel cells for creating electricity and drinking water – another first – as well as the reaction control system, gyros, and the umbilicals to provide electricity, command lines, and other connections to the Command Module.

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