Project Space Shooter: My ship won't move!

Hi, I am about half-way through the space shooter project, and my ship will not move. I have checked my ‘movement’ code over and over but it still doesn’t work. Here is my ‘player’ script so far:

 using UnityEngine; 
 using System.Collections;
 
 [System.Serializable]
  public class Boundary 
 { 
   public float xMin, xMax, zMin, zMax; 
 }
 
 public class PlayerController : MonoBehaviour {
 
  public float speed;
  public float tilt;
   
  public Boundary boundary;
  public GameObject shot;
  public Transform shotSpawn;
 
  public float fireRate;
  float nextFire;
 
  void Update ()
  {
      if(Input.GetButton("Fire1") && Time.time > nextFire)
      {
          nextFire = Time.time + fireRate;
          Instantiate(shot, shotSpawn.position, shotSpawn.rotation);
      }
  }
 
  void fixedUpdate ()
  {
      **float moveHorizontal = Input.GetAxis("Horizontal");
      float moveVertical = Input.GetAxis("Vertical");

      Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
      GetComponent<Rigidbody>().velocity = movement * speed;**
 
      GetComponent<Rigidbody>().position = new Vector3(
          Mathf.Clamp(GetComponent<Rigidbody>().position.x, boundary.xMin, boundary.xMax),
          0.0f,
          Mathf.Clamp(GetComponent<Rigidbody>().position.z, boundary.zMin, boundary.zMax) 
     );
 
      GetComponent<Rigidbody>().rotation = Quaternion.Euler(0.0f, 0.0f, GetComponent<Rigidbody>().rotation.x * -tilt);  
  }
 } 

Can someone please help me find out what is wrong? Thanks.

write FixedUpdate with a capital F
(:

All it takes to mess up the goal of 50 lines of code is one uncapitalized letter. Thank you!!