By shooting the planet, you can split it in two.
Then split one of those in two, again.
Over and over until there is nothing left.
In the future, there was a war that destroys almost entire earth. But people still fight each other. So the peaceful-mind-people decide to leave the earth and find another. In the hidden dimension, they found a secret marble that turns into two marbles when its broken. The marble represents a planet on universe which they can warp into. Now, the people in the spaceship starts breaking the marbles until they find another earth.