How to make an object not transferred to another at any angle?, there is a universal function of collision?

Thank You EgonOlsen, Worked perfect. But,is possible attach light to Dummy?.

With  earth.setBillboarding(true); not working,  without  earth.setBillboarding(true);  works!!!

Here the code:

                                earth= new Object3D(dummyPlane, true);
            earth.setTexture("glow");
            earth.setAdditionalColor(RGBColor.WHITE);
            earth.setLighting(Object3D.LIGHTING_NO_LIGHTS);
            earth.setTransparencyMode(Object3D.TRANSPARENCY_MODE_ADD);
            earthsetTransparency(7);
            earth.setBillboarding(true);
            earth.shareCompiledData(dummyPlane);
            earth.build();
            earth.strip();
                                earth.translate(0.22f,-25, -0.12f);

                                world.addObject(earth);
                                 
                             


            public void onDrawFrame(GL10 gl) {
         try {
            
         
            SimpleVector pivotsun= new SimpleVector();
         
            pivotsun.x = -20;
            pivotsun.y = -25;
            pivotsun.z = -13;
            
            earth.setRotationPivot(pivotsun);
            //earth.getTransformedCenter(pivotsun);
            //earth.translate(pivotsun);
            earth.rotateY(0.05f);

}
             

earth.setRotationPivot(pivotsun);

//no rotate
onDrawFrame(GL10 gl) {
   earth.rotateY(2);
}

or example "Multiple light sources".

How rotate object around pivot?
example:  earth=obj , Sun=pivot.

Billboarding - OK.

TextureManager.getInstance().addTexture("glow", new Texture(res.openRawResource(R.raw.glow), true));
            glowPlane = new Object3D(dummyPlane, true);
            glowPlane.setTexture("glow");
            glowPlane.setAdditionalColor(RGBColor.WHITE);
            glowPlane.setLighting(Object3D.LIGHTING_NO_LIGHTS);
            glowPlane.setTransparency(7);
            glowPlane.setBillboarding(true);
            glowPlane.shareCompiledData(dummyPlane);
            glowPlane.build();
            glowPlane.strip();
                               
                               light= new Light(world);
                light.setIntensity(250, 250, 250);
                               SimpleVector sv = new SimpleVector();
            sv.set(fuente.getTransformedCenter());
            sv.x = 0;
            sv.y = -50;
            sv.z = 40;
            light.setPosition(sv);
                               
                               world.addObject(glowPlane);

additive blending? code example please. I can not find.

Thank you.

How to make the light glow of the example "Multiple light sources" AnD3Bench?