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1. Diagram of Voyager spacecraft with its major components. Source https://solarsystem.nasa.gov/basics/Spacecraft-Information-Voyagers/ 2. Graphic showing timeline of Voyager 1 switching between roll thruster sets 1977 - Roll thruster set 1 2004 - Roll thruster set 1 heaters lose power Switched to Roll thruster set 2 2025 - Roll thruster set 2 getting clogged Possibility of failure in fall 2025 2025 – Team diagnoses that a heater switch in roll thruster set 1 flipped in 2004 and can be reset March 18 – Commands sent to turn on Roll thruster set 1 and flip the heater switch If Roll thrusters fired because the star tracker drifted and if the heater was still off, then an explosion would destroy Voyager 1 March 20 – After an agonizing 2-day wait, telemetry received that the heaters had successfully turned on! May 5 – DSN Canberra upgrade will cause loss of comms until Feb 2026, with brief periods of operation in Aug and Dec