once there was a boy who wanted to build a rocket but he doesn't have the right material it was too heavy he tried to find another material but there all too heavy and just it wouldn't take off but the the boy found copper it was lighter than most of the metals he used so he used that on the rocket and then he added engines to the bottom of the rocket and attached wings to make it a bird like rocket he turned on the rocket and it flew in the air like a bird and blew up