// Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.R))
        {
            discover.Reset();
        }

        //Attract
        foreach (Planet p in system)
        {
            float distance = ((Vector2)discover.transform.position - (Vector2)p.transform.position).magnitude;
            if (distance > p.minDistance && distance < p.maxDistance)
            {
                discover.ApplyForce(p.Attract(discover));
            }
        }

        discover.Move();
    }