NASA engineers have extended the operational life of Voyager 2 by roughly one year, according to The New York Times. The spacecraft, now nearly 50 years old, received a one-time power-system reconfiguration that the team nicknamed the "Big Bang."
The probe’s plutonium power source has been fading for years, losing about 4 watts of electricity annually, as reported by Space Daily. To compensate, engineers switched Voyager 2 to a single, all-at-once power distribution change rather than a gradual adjustment. This approach, described by NASA as a "power diet" in coverage from Aerospace Global News, preserves enough energy to keep the spacecraft’s science instruments active through at least another year.
Voyager 2 launched in 1977 and has traveled beyond the heliosphere into interstellar space. The spacecraft continues to return data on plasma, cosmic rays, and magnetic fields from regions no other probe has reached. The New York Times notes that keeping the aging probe alive requires careful management of its shrinking electrical budget, with engineers making difficult trade-offs between which systems remain powered.
The "Big Bang" maneuver was performed remotely on a spacecraft billions of miles from Earth, with commands taking many hours to reach it. The success of this operation means Voyager 2 can continue its unique scientific observations for a longer period, though the probe’s power supply remains finite and will eventually run out.
What to watch next: Whether NASA can find further power-saving measures to extend Voyager 2’s mission beyond the newly gained year.
