NASA Voyager 1 restores communication after unexpected signal loss

NASA engineers have successfully restored communication with the Voyager 1 spacecraft following a 48-hour signal loss that occurred between October 18 and 19. The probe, located approximately 24 billion kilometers from Earth, regained contact on October 20 before engineers could transmit corrective commands.

Preliminary analysis indicates that a group of thrusters went offline, triggering an automatic fail-safe system that activated backup thrusters to maintain the spacecraft's orientation.

This incident follows a major energy-saving operation completed in September, known as the “Big Bang.” During this process, the Jet Propulsion Laboratory team replaced three onboard devices with lower-power alternatives to combat the steady depletion of plutonium in the probe's radioisotope thermoelectric generators. Voyager 1 loses approximately 4 watts of power annually, making such efficiency measures critical to extending the mission's scientific lifespan.