[memetomancer]

should be able to measure that with the same lasers, I would think.

[londons_explore]

At those levels of accuracy, I would expect the refractive index of the not-quite-empty space space in our solar system to prove problematic.

[Baeocystin]

I wonder if orbiting outside of the ecliptic results in less stuff (even down to hydrogen) in a meaningful way.

[mturmon]

There is no atmosphere for a space interferometer, which is one of the main technical considerations for optical comms from orbit.

[robertlagrant]

But how do you know where to point them?

[fuzzylightbulb]

Believe it or not: more lasers