Quick reply...

I have heard about Nokia Innovators (there are so many Nokia contests that I'm confused).
I have Stellarium installed (desktop version? from maemo.org)
Stellarium Mobile has slightly modified user interface and added support for accelerometer; no other changes noticeable from the video the developer released for the contest.

Fabien has already won a lucrative prize for the application; why does he try to make the Stellarium Mobile commercial non-GPL application? Nobody is going to pay to him!

Somebody, take the source code of Stellarium and implement better GUI and support for GPS and accelerometer! If it is done quickly enough, Fabien will understand that it is pointless to charge for such small improvements. Then he may go back and work together with other developers on GPL-licensed applications.