I remember playing a Sol map in the Distant Stars mod back in the Trinity version of Sins, and It was AWESOME. It had its own planet artwork (actually got to fly my fleet through the rings of Saturn, colonize the moon, and of course, bomb good ole' Mother Earth) and the planets were spaced around the map in a fairly accurate manner (lol, remember Sins cannotinto realistic scale and distances), but its not compatible, yet, with Rebellion because of those unique planet files and such.
Im pretty sure when Rebellion is finally released, the modders will create a Distant Stars mod for Rebellion