It turns out its difficult to fix a 1980s computer system thats dashing around Earth hundreds of miles over our heads.NASA has actually spent more than a week examining a computer problem that put the venerable Hubble Space Telescope out of commission on June 13 and that may force the spacecraft to turn to its backup computer system.”After performing tests on several of the computer systems memory modules, the outcomes indicate that a various piece of computer system hardware might have caused the problem, with the memory mistakes being only a sign,” NASA officials wrote in a declaration published Tuesday (June 22). Related: The best Hubble Space Telescope images of all time!Although the initial abnormality recommended that a memory module was degrading, the group now thinks that the root of the issue may be in the computers central processing module or that units connection with interface hardware.Right now, the declaration added, the group is creating tests to more confidently recognize the issue; those tests “will be run in the next couple of days.