Last November, NASA's Voyager 1 sent home garbled data, and engineers traced the problem to the flight data subsystem (FDS). The problem turned out to be a single chip in the FDS memory. They couldn't repair the chip but could move the affected code into sections and store them in different parts of the FDS system. They tested the new system this week, sending signals to the Voyager 1, 22.5 light-hours away. It worked, and Voyager 1 is back.
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