I made a prototype that simulate for the meteor hits the planet and create a big hole on it.
Like this :
I used blend mode : Destination Out for the cover object.
But the next meteor still hit collision of the planet.
This is what I have done now : https://drive.google.com/open?id=0BxwlTIFElYnTOWMwb2ZqNXJCUVU
Could we disable collision at the area which cover by Destination Out objects ?
Hope see your answers.