NASA's Voyager 1, one half of the Voyager pair of probes that have been the longest-operating spacecraft in history, is currently malfunctioning in deep space without science or engineering data coming back to Earth— including telemetry that's critical to moving and properly aligning the spacecraft.
According to information from NASA and reporting originally from Ars Technica, this happened due to a memory error occurring within the Voyager 1's onboard "Flight Data System (FDS)," which uses an older version of volatile memory that has seemingly corrupted after all these years of operation. Both NASA's Voyager 1 and Voyager 2 were launched in 1977, which means it took about 45 years for Voyager 1's primitive RAM equivalent to fail. That's impressive for primitive tech, but it just may wind up retiring the most aged spacecraft out there.
