Esma is actually a planet with a very hard surface and many rocks. Only the rocks have been removed. The surface was used as foundation for all buildings.
In 2004 a planet was discovered and named. Esma. The planet wasn't really useful, at least that's what everyone thought. In 2005 a colonization project was started. The planet seemed more useful than we thought. More FantaCratians civilized Esma. Esma became a planet with a large population and many companies. Esma became a big trade planet.
Esma's history isn't that detailed because news wasn't archived before 2005.