I read this post on /r/astronomy today; the gist of it is that there are 2 additional Hubble telescopes that were created for top secret surveillance purposes by the NRO that were never used and have now been donated to NASA. In addition, a third primary mirror and some additional parts exist.
Would it be feasible to set deploy these, with the appropriate equipment, so that they could be used in some kind of interferometry arrangement?
If so, what kind of resolution might be possible? What kind of scientific applications could we make of this? Would this allow us to image earth-sized planets to any useful degree? How much better of an extreme deep field could we image, and could we learn from it? Other uses?
Thanks in advance for any answers. Given how much NASA's budget has suffered, this strikes me as an amazing opportunity for the agency to make something wonderful out of this.
I've also posed this question in /r/astronomy, but haven't received any answers yet.