NASA figured out how to keep its 48-year-old Voyager 2 probe running for yet another year
AI-summarised brief · reviewed before publication
NASA engineers have implemented a power‑conservation maneuver dubbed the “Big Bang” on Voyager 2, reducing its electricity use so the remaining three science instruments can operate for at least another year. The 48‑year‑old probe relies on a radioisotope thermoelectric generator that loses about four watts annually as plutonium decays, forcing the team to shut off non‑essential hardware and replace some functions with lower‑power alternatives. Voyager 2, now 142 AU from Earth, has already lost two instruments since 2024, leaving only plasma, cosmic‑ray and magnetic‑field sensors active. A similar update is planned for Voyager 1, which is farther out at roughly 171 AU. Both spacecraft continue to return interstellar data decades after their last planetary encounters. The maneuver extends the mission without requiring hardware or fuel.
💡 Why It Matters
- · Keeping Voyager alive preserves the only human‑made sensors in interstellar space, offering continuous measurements of the heliosphere’s edge.