problems with coroutines

trying to use coroutine but it only works once. then seems to not go back to the start function all collision stops after it works once here is the script using C#

// check to see if enemy collides with the player void OnTriggerEnter(Collider otherObject) { if (otherObject.tag == "enemy") {

         player.Lives--;
         Enemy enemy = (Enemy)otherObject.gameObject.GetComponent("Enemy");
         enemy.setpositionandspeed();
         
         StartCoroutine(Destroyship());
     
         
       }   
        
     
 }
 
 //get ship to explode and reappear 
 IEnumerator Destroyship()
 
 {
     Instantiate(explosionprefab, transform.position, Quaternion.identity);
     gameObject.renderer.enabled = false;
    transform.position = new Vector3 ( 0f, transform.position.y, transform.position.x);
     yield return new WaitForSeconds(1.5f);
     gameObject.renderer.enabled = true;

 }

}