Overview

• JunoCam’s images deteriorated again under Jupiter’s intense radiation during its 74th orbit in mid-2025, triggering fresh concerns over the camera’s longevity.
• Engineers have traced the latest corruption to repeated damage in the camera’s voltage regulator and plan to initiate another round of heater-driven annealing.
• Variations of the high-temperature repair are slated for trial on additional Juno instruments and engineering subsystems to combat radiation effects.
• The team presented findings at the IEEE Nuclear & Space Radiation Effects Conference in Nashville, showcasing the annealing process as a proof of concept.
• NASA is applying these lessons to improve radiation tolerance in upcoming planetary missions and Earth-orbiting satellites.