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Power Control Unit (PCU): As Hubble's power switching station, the PCU controls and distributes electricity from the solar arrays and batteries to other parts of the telescope.
Replacing the original PCU, which has been on the job for 11 years, required Hubble to be completely powered down for the first time since its launch in 1990.
Click here for an image of the PCU that will be replaced during this mission, requiring Hubble to be powered down.
Hence, we have PCU, or Politically Correct University, to demonstrate that time in the US when being politically correct about EVERYTHING was in.
Overall, though, this is still a neat little flick that was overlooked at the box office, yet found its audience when it was released on home video.
It would have been easy for the studio to release PCU without any fanfare and with barebones extras, but they put some time and effort into the release.
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