silver comet? south of lapine oregon, headed down and west90 degree clear blue sky brilliant sun day, long trailing comet-like flyby at highspeed, on a downwardownward trajectory, traveling east to west brilliant silver mass with brilliant silver/white trailing...size ? guessing the altitude to be 8,000 ft, I would guess 6 foot diameter with 75 foot long tail, my guess would be touchdown 8-10 miles from here. the color was the surprise !