Twice, I obseved what looked liked a huge, shiny, chrome colored, solid, heavy ball berring flying in the sky and diappear before my eyes.I was on my way home from work when i saw what appeared to be a perfectly round, solid, chrome color, shiny object fly from west to east then turn when it was over me and head north. The object was approximatly 100 feet above me in the sky. There was no sound, no propellers, no windows, no doors, nothing. Approximatly 50 feet or so in front of me the object disappeared before my eyes. The side facing the east was shinier because the sun's rays was reflecting off of it. It's hard to guess the size of the object but if I had to take a guess I would say it was about half the size of a Voltswagon (Beetle). Later that same week I saw the object again. It was much further away from me then and higher in the sky. This object also disappeared as I was oberving it. Both obsevations were on cloudless days, against blue skies.