NASA to Execute Major Maneuver on Voyager 1 as Another Instrument Is Shut Down
The veteran spacecraft Voyager 1, now traveling far beyond the influence of the Sun, continues to return valuable data from interstellar space. Launched in 1977, the probe has crossed the heliopause and is presently about 150 astronomical units from Earth. As its radioisotope thermoelectric generator gradually loses output, mission engineers must make careful decisions about which systems remain active to keep the mission alive.
Recently, NASA announced the shutdown of one of Voyager 1’s scientific instruments, the plasma wave subsystem, to conserve dwindling power reserves. This instrument has been crucial for studying the density and oscillations of the interstellar medium, but its continued operation would consume a fraction of the limited electricity available. By turning it off, the team hopes to extend the spacecraft’s ability to communicate with Earth for several more years.
In conjunction with the instrument shutdown, mission planners are preparing a complex maneuver often referred to internally as a “Big Bang” adjustment. The procedure involves firing a set of long‑dormant thrusters to reorient the probe’s high‑gain antenna more precisely toward Earth. This adjustment is necessary because slight drifts in the spacecraft’s attitude, caused by decades of thermal flexing and micro‑meteoroid impacts, threaten to misalign the communication beam as power levels fall.
Executing the thrusters presents risks; the hardware has not been used since the spacecraft’s planetary encounters in the late 1970s and early 1980s, and there is concern about potential degradation or failure. Engineers have conducted extensive ground‑based simulations and have uploaded updated command sequences to ensure the burns are as gentle and precise as possible while still achieving the desired pointing correction.
If successful, the maneuver will stabilize Voyager 1’s link with the Deep Space Network, allowing the remaining instruments—such as the magnetometer and cosmic ray subsystem—to continue transmitting data about the interstellar environment. The mission team remains optimistic that these careful power‑management steps will keep Voyager 1 operational well into the 2030s, providing humanity with an unprecedented glimpse of the space between the stars.
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