[ridgeguy]

How about optical interferometry? IIRC, this can beat the diffraction limit.

[greglindahl]

Optical interferometry means you have a wider telescope. Same limit formula.

[mturmon]

Yes, but the aperture of the interferometer is no longer limited in the same way, so we could say that interferometry gets around the “naive” diffraction limit.

[cryptonector]

Well, but if you have a bunch of these in orbit, able to image the same site, at the same time...