NASA's Voyager 1 Only Has Two Active Science Instruments Left After Latest System Shutdown

Summary

NASA's Voyager 1 probe is currently over 15.8 billion miles from Earth and is projected to reach a communication delay of one full light-day by November 18, 2026

Mission engineers at the Jet Propulsion Laboratory recently deactivated the spacecraft's Low-energy Charged Particles instrument to manage dwindling nuclear power reserves

The agency is preparing a high-stakes "Big Bang" maneuver to reconfigure the probe's heaters and potentially extend its operational lifespan into the 2030s

NASA‘s Voyager 1 launched in 1977 before some of its current flight team members were even born. It remains the farthest human-made object from Earth today. The interstellar pioneer continues to send scientific data from the deep cosmos while its radioisotope thermoelectric generators lose about four watts of power annually. To keep the 49-year-old probe functional, mission controllers at the Jet Propulsion Laboratory have initiated a series of aggressive engineering maneuvers.

Engineers successfully shut down the spacecraft’s Low-energy Charged Particles instrument on April 17, 2026. This specific tool operated almost without interruption since launch to provide critical data about the interstellar medium. The difficult decision leaves only two active science instruments on board to measure magnetic fields and plasma waves. Shutting down the hardware was deemed strictly necessary to stabilize plunging power levels and avoid triggering an autonomous failsafe that could end the mission entirely.

The recent shutdown serves as a precursor to an ambitious reconfiguration nicknamed the “Big Bang” plan. The California space center will attempt to simultaneously swap multiple heaters and powered components to save approximately 10 watts of power. A successful maneuver will ensure the probe’s thruster lines stay warm enough to prevent freezing. Losing those thrusters would permanently sever the craft’s ability to point its antenna toward our planet. NASA plans to test the strategy on Voyager 2 first before applying the fix to Voyager 1 later in the year.

Radio signals from the spacecraft currently take roughly 23 hours to travel to the control room. The probe is moving outward at 88,000 miles per hour and is on track to reach a staggering distance of 16.1 billion miles on November 18, 2026. This exact distance represents one full light-day from home. Reaching this point marks the first time a human-made object has traveled far enough that a simple status check requires a 48-hour round trip. The milestone highlights the unprecedented scale of humanity’s longest-running space endeavor. Even as its power fades over the coming decades, the silent ambassador will continue carrying its famous golden record to the stars.