Irrlicht for 3D graphics. Bullet for physics. XML loader of Levels. Complete Source with all assets except I replaced the asteroids with pool balls because the asteroids were a commercial purchase is located at
http://code.google.com/p/android-destroytheworld-3d/
If you would like to contribute money or see the finished project in action purchase it in the play store for $1.99. Search for "Destroy The World 3D". Please give a good rating.