public IEnumerator LoadPlanet()
    {
        _planetdata = new List <Planet>();
        WWW planetdata = new WWW("http://81.169.177.181/olp/planet_list.php");

        yield return(planetdata);

        if (string.IsNullOrEmpty(planetdata.error))
        {
            _planetdata = new List <Planet>();
            _planetdata = JsonHelper.getJsonArray <Planet>(planetdata.text).ToList <Planet>();
            PlanetManager.AddPlanets(_planetdata);
        }
        else
        {
            Debug.LogError("ERROR FATAL");
        }
        _planetdata.Clear();
        PlanetManager.DrawPlanets();
    }