> Nobody knew at the time that Hubble was literally a KH-11 class telescope, but one pointed the other way. The mirror size and the ability to be carried in the shuttle was probably to get some synergies out of those two projects.

Along these lines, there's a lot of hearsay that the technology that enabled JWST's mirrors, sun shade, etc. to be folded up for launch and deployed once in space had already been developed for military satellites.