In 2017 NASA announced it had successfully fired all 4 of Voyager 1's trajectory correction maneuver (TCM) thrusters, dormant since 1980. These will replace a degraded set of jets which kept the antenna pointed at Earth, allowing Voyager to transmit data for 2 to 3 extra years pic.twitter.com/fxOItoibiU

— Fermat's Library (@fermatslibrary) January 31, 2019