We are were out walking, dark clear star lit night no moon. Lots of planes taking off and landing >Nürnberg airport. we live in Franconia, Bavaria. Then we spotted this phenomena. Very high, at first we thought it was a plane, but then realised that it could not have been, travelling quite fast, looked like a tube of light, thought it might have been plane lights, but was independent of any craft that we could see, only white light, no flashing reds which is typical. After tracking it for 4 mins or so it just dissapeared. No explanation, maybe some strange atmospherical affect? Honestly never seen anything like it before, like a tube/ train of light travelling through the sky.