How to create a planetarium-like application using Urho?

Hello,

I am just collecting information about how to create a planetarium like application using Urho.
For example an application, like Stellarium.
What I think I need definitely is a sphere (Earth) in the center of the world (Universe) where the camera (observer, telescope) will be somewhere on the surface of that sphere (Earth).
Stars (or other objects, like clusters, galaxies, nebulaes) on the sky can be also small spheres, where visibility and position is calculated based on real star catalogue information (Simbad, NED).

Any help, information or link to similar project implemented using Urho is appreciated!

Best Regards,

Ladislav

Actually I have some progress at the above topic. It is not so difficult as I thought at the beginnig
Of course I did a lot of research.