Space tethers are long cables which can be used for propulsion, momentum exchange, stabilization and attitude control, or to maintain the relative positions of the components of a large, dispersed satellite/spacecraft sensor system. Depending on the mission objectives and altitude, spaceflight using this form of spacecraft propulsion is theorized to be significantly less expensive than spaceflight using rocket engines.
Space tethers are long cables which can be used for propulsion, momentum exchange, stabilization and attitude control, or to maintain the relative positions of the components of a large, dispersed satellite/spacecraft sensor system. Depending on the mission objectives and altitude, spaceflight using this form of spacecraft propulsion is theorized to be significantly less expensive than spaceflight using rocket engines.
Source: Wikipedia "Space tether" · CC BY-SA 4.0
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