After image degradation, NASA used targeted heat to repair JunoCam, successfully restoring the camera in time for a close pass of Jupiter\u2019s moon Io.<\/p>\n
NASA engineers have revealed<\/a> they remotely repaired a failing camera aboard the Juno spacecraft orbiting Jupiter using a bold heating technique known as annealing.<\/p>\n Instead of replacing the hardware<\/a>, which was impossible given the 595 million kilometre distance from Earth, the team deliberately overheated the camera\u2019s internals to reverse suspected radiation damage.<\/p>\n JunoCam, designed to last only eight orbits, surprisingly survived over 45 before image quality deteriorated on the 47th. Engineers suspected a voltage regulator fault and chose to heat the camera<\/a> to 77\u00b0F, altering the silicon at a microscopic level.<\/p>\n The risky fix temporarily worked, but the issue resurfaced, prompting a second annealing at maximum heat just before a close flyby of Jupiter\u2019s moon Io in late 2023.<\/p>\n The experiment\u2019s success encouraged further tests on other Juno instruments, offering valuable insights into spacecraft resilience. Although NASA<\/a> didn\u2019t confirm whether these follow-ups succeeded, the effort highlighted the increasing need for in-situ repairs as missions explore deeper into space.<\/p>\n While JunoCam resumed high-quality imaging up to orbit 74, new signs of degradation have since appeared. NASA hasn\u2019t yet confirmed whether another fix is planned or if the camera\u2019s mission has ended.<\/p>\n