Rejected Hubble

Space Watch: Backing A Bad Hubble Decision:

"Yet, NASA apparently never considered the idea seriously, even though engineers had completed the preliminary design work and construction of a revised docking module would have been far simpler and cheaper than trying to send robots to Hubble.

Instead, NASA officials repeatedly have acted as though no such option existed, often describing how a shuttle mission to the telescope was too risky - partly because any rescue would require a dangerous spacewalk."