Orbiting Service Module

An Orbiting Service Module is a component of a spacecraft that operates in space, providing essential life-support, power, and propulsion functions during a mission. It typically contains systems for generating electricity, managing waste, and sometimes refueling the spacecraft. Designed to remain connected to the main crew module or station, it supports astronauts and equipment throughout their mission. Think of it as the spacecraft’s utility vehicle, ensuring all systems work smoothly and maintaining the environment needed for crew safety and mission success. It often plays a vital role in dockings, maneuvering, and extending mission capabilities beyond the initial launch.