NASA's Perseverance rover powered by processors used in 90s' iMacs
NASA's Perseverance rover, which is presently on Mars, is powered by the same IBM PowerPC processor found in the Apple iMacs from 1998. The processor is about 23 years old, and is painfully slow by modern standards. However, Perseverance's PowerPC 750 processor has been modified for the mission by BAE Systems. The chip has been used for the Curiosity rover as well.