NASA Cuts Voyager 2 Power Use by 10 Watts, Pushing Mission Into the 2030s

3 articles · Updated · ExtremeTech · Aug 20

10 watts of saved power from NASA’s completed Voyager 2 reconfiguration could keep the probe operating into the 2030s, beyond earlier estimates that science data might end around 2028.
4 watts of annual power loss from the probe’s plutonium generator had forced NASA to shut down nonessential instruments, but the new setup preserves needed heat while reducing electrical draw.
2 to 3 extra years of power margin matter because Voyager covers about 300 million miles a year, potentially improving readings as it moves through the solar system’s outer boundary regions.
Voyager 1 is next: NASA plans a similar switch within months to extend the 1977-launched twin probe’s life as well.

Sources

ExtremeTech12h ago

NASA Extends Voyager 2 Mission Life with Power Upgrade

The New York Times2d ago

NASA Engineers Maintain Aging Voyager 1 and 2 Probes

Aerospace Global News2d ago

NASA Extends Voyager 2 Science Operations for Another Year

12 Sources

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Voyager 2’s 2026 “Big Bang” Maneuver: Engineering, Science, and the Race to Prolong Humanity’s Interstellar Legacy

Overview

Voyager 2’s power source, plutonium-238, naturally decays, causing the spacecraft to lose about 4 watts of electricity each year. By 2026, this steady decline left Voyager 2 with critically low power, forcing NASA engineers to perform the risky 'Big Bang' maneuver to keep its science instruments running. Thanks to this effort, Voyager 2’s instruments are expected to operate at least one more year. As power continues to drop, more instruments are shut down, and eventually, when the electrical output falls below the minimum needed for transmission—estimated around 2036—Voyager 2 will fall silent, ending its historic mission of interstellar exploration.

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