The Mars Science Laboratory project reported late last week that the Curiosity Rover was switched over to its backup computer system, following what sounds like a problem of memory corruption. Memory corruption, if undetected, can lead to insidious problems that get worse and worse over time. The plan now, therefore, is to repair the A-side so that it can act as the B-sides backup. The Curiosity team havent yet said what caused the memory corruption, but it might just be down to cosmic rays.”]