clear night, no light pollution,high altitude, bright white light, definately hi speed, controlled , vertical climb at very rapid pace, no other "aircraft lghts", lost sight after , maybe, 2 seconds of vertical climb. not ISS, to fast, controlled vertical ascent.no other aircraft, no trail, slight haze around craft, silent, maybe 50,000 ft plus, I wouldnt ussually report this, but it was travelling v high speed, slowed, to a fraction of its pace, then climbed vertically ,and had gone within a few seconds!! i know my stuff, and that was no human craft, and no human /craft would allow g-force as like that!! i am going to stay up and see if its repeated, if it is, then maybe something in orbit, i hope ive not wasted your time. thank you.
