CNN —Engineers at NASA have successfully fired up a set of thrusters Voyager 1 hasn’t used in decades to solve an issue that could keep the 47-year-old spacecraft from communicating with Earth from billions of miles away. Currently the farthest spacecraft from Earth, Voyager 1 is about 15 billion miles (24 billion kilometers) away. Earlier this year, engineers spotted an issue when the fuel tube inside one of Voyager’s thrusters became clogged. Engineers switched again to the trajectory correction thruster set in 2018 when the second set also appeared clogged. Once the spacecraft has exhausted this thruster set, Voyager 1’s remaining option is the other already clogged set of attitude propulsion thrusters.

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Persons: Calla, ”, It’s, Todd Barber, Suzanne Dodd, ” Barber Organizations: CNN — Engineers, NASA, Jet Propulsion Laboratory, JPL, Caltech, Engineers Locations: Pasadena , California