Voyager 1 just fired up its backup thrusters for the 1st time in 37 years

NASA’s far-flung Voyager 1 spacecraft has taken its backup thrusters out of mothballs.

Voyager 1 hadn’t used its four “trajectory correction maneuver” (TCM) thrusters since November 1980, during the spacecraft’s last planetary flyby — an epic encounter with Saturn. But mission team members fired them up again Tuesday (Nov. 28), to see whether the TCM thrusters were still ready for primetime.

The little engines passed the test with flying colors, NASA officials said. [Voyager 1’s Road to Interstellar Space: A Photo Timeline]

“The Voyager team got more excited each time with each milestone in the thruster test,” Todd Barber, a propulsion engineer at NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, California, said in a statement. “The mood was one of relief, joy and incredulity after witnessing these well-rested thrusters pick up the baton as if no time had passed at all.”

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As Barber’s words suggest, the mission team didn’t do this out of idle curiosity. Voyager 1 — which in August 2012 became the first human-made object ever to enter interstellar…

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