Why the spaceship is moving forward and not up ?

I did a test. The z axis is changing up/down not the y (0,0,1)

I did something else now. If i'm using Lerp then up will move the spaceship up.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class Landing : MonoBehaviour
 {
     public Vector3 startPos;
     public Vector3 endPos;
     public float distance = 30f;
     public float lerpTime = 5;
     public float currentLerpTime = 0;
 
     // Use this for initialization
     void Start ()
     {
         startPos = transform.position;
         endPos = transform.position + Vector3.up * distance;
     }
 
     // Update is called once per frame
     void Update()
     {
         currentLerpTime += Time.deltaTime;
 
         if (currentLerpTime >= lerpTime)
             currentLerpTime = lerpTime;
 
         float Perc = currentLerpTime / lerpTime;
         transform.position = Vector3.Lerp(startPos, endPos, Perc);
     }
 }