Having a little dig around in the installed beta folder revealed the scripts for all the levels of the game still there. A couple of the "3 letter plus a number" names I could not fathom out so have left the code.
Here is the list:
Bespin 1
Bespin 2
Corusant
Dagobah
Death Star
Fellucia
Geonosis
Hoth
Kamino
Kashyyk 1
Kashyyk 2
Mustafa
Myg1 ????
Naboo 1
Naboo 2
Pol1
Rhen Var 1
Rhen Var 2
Space 1
Space 2
Space 3
Space 4
Space 5
Space 6
Space 7
Space 8
Space 9
Tantive IV
Tatooine 1
Tatooine 2
Tatooine 3
Utapau 1
Yavin 1
Yavin 2