Editing Electric motor (section)

==== Electric propulsion ====
{{Main|Electrically powered spacecraft propulsion}}
An electrically powered spacecraft propulsion system uses electric motor technology to propel spacecraft in outer space. Most systems are based on electrically accelerating propellant to high speed, while some systems are based on [[electrodynamic tether]]s principles of propulsion to the [[magnetosphere]].<ref>{{Cite web |title=Launch Assist Tethers |url=http://www.tethers.com/LaunchAssist.html |archive-url=https://web.archive.org/web/20171116050844/http://www.tethers.com/LaunchAssist.html |archive-date=2017-11-16 |access-date=2017-09-15 |website=www.tethers.com}}</ref>