Hi,
The normals are all inside out on the Anim8or model (I had a peek at it, sorry!).
Check it out. Open your Galaxy in Anim8or, In the toolbar set Select Object / Point Edit mode, below that set Face Select, and below that set Drag Select.
Drag a box all around the rocket, then go back to Object Select Edit mode (the pointer). The ship will be ALL BLUE.
In the EDIT drag down menu, select Flip Normals. The rocket will turn ALL YELLOW. Export it and convert it again. Should be okay with that.