To replace it, NASA engineers powered up a backup gyroscope that had been dormant since early 2011. They were heartened, at first. The gyroscope began spinning despite not being used for 7 1/2 years....
from NDTV News - Special https://ift.tt/2ORnWYU
Thursday 25 October 2018
No, NASA Didn't Fix Hubble Telescope Simply By Switching It Off And On
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