On this day in 2017 - November 28th - the Voyager team completed a successful test of Voyager 1's trajectory correction maneuver (TCM) thrusters.

Before that the last time the backup thrusters were fired up was in November 1980. The team thinks that successful use of the TCM thrusters will extend the mission by an additional two to three years. Voyager 1 is now in interstellar space, and light or radio signals take nearly 21 hours to reach Earth from there.

Mona Evans
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