On December 9, 1993, a troubled Hubble Space Telescope was considered ready to be put "Back In Action", after astronauts made some repairs and adjustments. They also broke some space walk records on that day.
In the course of their repair mission, the astronauts completed a record five space walks on that December 9th, including the longest of the 11 days they were in orbit around Earth. That longest happened while the 40 ft. solar panels that power the telescope were unfolded.
The main repair on their list was to correct a focus problem caused by a mirror in the lens system that was manufactured just a teeny tiny bit too flat. They fixed the problem by adding a compensating lens. After all the repairs had been made, Hubble became an incredibly useful scientific tool, instead of the $1.55 billion dollar piece of practically useless space junk it would otherwise have been.
"I Can See Clearly Now", written and recorded as a successful comeback hit by American singer and songwriter Johnny Nash, seems to be a fitting song for the 'Today's Tune' in this case.
Johnny Nash - "I Can See Clearly Now" on The Midnight Special.