<ul><li>Voyager 1 spacecraft's primary thrusters revived after being deemed a loss since 2004 due to a heater failure.</li><li>Silicon dioxide deposits from an aging rubber diaphragm in the fuel tank caused clogging issues in thruster tubes over the decades.</li><li>Reviving the primary thrusters provides a precious Plan B for the mission if backup thrusters were to fail, as trajectory thrusters do not provide roll control.</li><li>Engineers remotely jiggled heater controls, enabled primary thrusters, and successfully got Voyager 1's star tracker to drift off course, indicating that the fix worked.</li></ul>

Voyager 1’s Primary Thrusters Revived Before DSN Command Pause

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