void Start()
 {
     rocket           = GameObject.Find("Rocket");
     rocketController = rocket.GetComponent <RocketController>();
     rocketController.StartFire();
     rocketRb          = rocket.GetComponent <Rigidbody2D>();
     rocketRb.bodyType = RigidbodyType2D.Static;
     restartLabel.gameObject.SetActive(false);
     scoreLabel.gameObject.SetActive(false);
 }