For 21 years, Voyager 1’s primary roll thrusters were considered dead. Then in 2025, NASA tried to wake them up from 15 billion miles away — knowing that if they fired cold, they could explode, but if they stayed dead, the spacecraft might one day lose its aim - Space Daily
Source:Space Daily
For most spacecraft, a failed thruster is an engineering problem. For Voyager 1, it is a problem stretched across interstellar space, handled by commands that