NASA engineers have successfully revived Voyager 1’s backup thrusters, unused since 2004 and once considered defunct. Space.com reports: This remarkable feat became necessary because the spacecraft’s primary thrusters, which control its orientation, have been degrading due to residue buildup. If its thrusters fail completely, Voyager 1 could lose its ability to point its antenna toward Earth, therefore cutting off communication with Earth after nearly 50 years of operation. To make matters more urgent, the team faced a strict deadline while trying to remedy the thruster situation. After May 4, the Earth-based antenna that sends commands to Voyager 1 — and its twin, Voyager 2 — was scheduled to go offline for months of upgrades. This would have made timely intervention impossible.
To solve the problem, NASA’s team had to reactivate Voyager 1’s long-dormant backup roll thrusters and then attempt to restart the heaters that keep them operational. If the star
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