Blitzing through interstellar space at over 35,000 miles per hour (56,000 kilometers per hour), NASA’s Voyager 1 probe is now over 15 billion miles (or about 24 billion km) away from Earth. And the U.S. space agency’s Jet Propulsion Lab just north of Los Angeles is working hard to make sure it keeps going for just a bit longer.

On Tuesday, Voyager mission engineers at JPL announced that they have successfully executed a critical power-saving hack on the spacecraft’s sister probe, Voyager 2. They’re calling it the “big bang,” a delicate toggling on and off of Voyager 2’s key components, in pairs of three, across a coordinated…

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