As amazing as Hubble is, it's worth remembering that other agencies built several more devices of the same or better resolving capability, and the NRO donated two spares to NASA almost a decade ago [1][2]. Not sure what's happened with those devices since then.

"Why build one when you can have three, at thrice the price?"

[1] http://content.time.com/time/health/article/0,8599,2116436,0... [2] https://www.spacesafetymagazine.com/space-exploration/deep-s...