Classic movie scenario. Hubble's down, and we need it now. No-one can solve the errors. Old guy walks in, worked on Hubble 30 years ago. "There's a backup modu

Classic movie scenario. Hubble's down, and we need it now. No-one can solve the errors. Old guy walks in, worked on Hubble 30 years ago. "There's a backup module, with an override command to activate it, but it won't work with the system down. You'll have to use the manual override switch - on the telescope."