The goal was to create an entire planet -- all the way to the lower boundary of the map -- of floating islands of rock.
As of release 0.1, they are really just floating bits of rock. While quite fun to fly about, there isn't much to see other than floating bits of rock. To make them a bit more worth while, they are densely populated with any ore available in the current sector.
The art for the starmap icon and horizon while in orbit were provided by kolt16.
Starmap: http://i.imgur.com/80EodlR.jpg
Surface: http://i.imgur.com/O0ih9Bl.jpg
Known Issues:
5 block wide pillar at spawn in location.
A few blocks at the base of the world, causing a pretty solid platform to land on.