We have something along those lines, albeit not quite as long-baseline. Spektr-R is a radio satellite on a elliptical orbit that gives baselines up to 350,000 k

We have something along those lines, albeit not quite as long-baseline. Spektr-R is a radio satellite on a elliptical orbit that gives baselines up to 350,000 km (0.35 Gm), linked to Earth-based facilities. https://en.wikipedia.org/wiki/Spektr-R https://en.wikipedia.org/wiki/Spektr-R