* First Servicing Mission (STS-61, December 1993): This mission was crucial as it corrected the telescope's flawed primary mirror, enabling it to achieve its intended scientific capabilities.
* Second Servicing Mission (STS-82, February 1997): This mission replaced several instruments, installed a new gyroscope, and improved the telescope's performance.
* Third Servicing Mission (STS-103, December 1999): This mission replaced gyroscopes and other components, ensuring the telescope's continued operation.
* Fourth Servicing Mission (STS-109, March 2002): This mission installed a new camera, a new spectrograph, and other upgrades, significantly enhancing Hubble's capabilities.
* Fifth and Final Servicing Mission (STS-125, May 2009): This mission was the most complex, replacing all six gyroscopes, installing new batteries, and making other repairs and upgrades. This mission extended the telescope's lifespan for another decade.
Therefore, there is no single date for "the" Hubble telescope repair, as it has been serviced multiple times throughout its operational history.
