Fantastic article: https://arstechnica.com/space/2024/04/recoding-voyager-1-nasas-interstellar-explorer-is-finally-making-sense-again/ [Latency] "Voyager 1 is flying on an outbound trajectory more than 15 billion miles (24 billion kilometers) from Earth, and it takes 22-and-a-half hours for a radio signal to cover that distance at the speed of light. This means it takes nearly two days for engineers to uplink a command to Voyager 1 and get a response." [Error detection, correction, remote debugging] "Voyager's ground team discovered a single chip responsible for storing a portion of the FDS memory stopped working, probably due to either a cosmic ray hit or a failure of aging hardware .... about 3 percent of the FDS memory was corrupted by the bad chip .... had to relocate that code into a different portion of the memory, and then make sure that anything that uses those codes, those subroutines, know to go to the new location of memory, for access and to run it."