[longshadow]

Then imagine a visual interferometer system with Earth-moon baseline!! Images of extra-solar planets.

Ah, you beat me to it by 24 minutes!

[edwin hubble]

Visual wavelength interferometry...br> Yes, it can be done...
Synchronizing, aligning, with an Earth-moon baseline will be the challenge
but by the time we are ready to install on the moon, we would have the technology.

Eventually a baseline of Jupiter-orbit size.

[edwin hubble]

Here's a good overview paper on optical interferometry in space, National Academies of Science

Space Science in the Twenty-First Century
Imperatives for the Decades 1995 to 2015
Astronomy and Astrophysics

Nat. Academies overview paper on optical interferometry in space