I was driving into a neighborhood delivering papers on royal Berkshire ln when I first saw the object.What caught my attention was the sheer size of the this bright illuminating light, bigger and brighter than the stars that were still lingering about as dawn came.I had no idea what the object could have been since I've observed conventional aircraft plenty of times in the area.The object seemed to be just over the tree line in the distance, maybe a half mile away, not very sure, it was so bright I couldn't believe it, I slowed my car down to get a better look and it just moved in a straight line NE, not making any sudden movements or sounds, no other blinking lights or external features just a giant bright white light moving in a straight line above the trees, I drove on trying to keep track of it but lost it as I approached the tree line, delivered the papers and went back maybe 5 mins to where I had seen it, this time with my back to the area I had seen it, and there were no lights and no other objects like planes or conventional craft in the sky.During my skin shivered, my mouth was open, kept repeating what the hell is that, I slowed down to get a better look and felt very spooked and kind of said to myself, get back to work and continued on all the while trying to keep track of it but lost it, when I came back I felt weird/uneasy since their was nothing in the sky but maybe 10 mins later as I went on with my route had a strange sensation of dizziness and loss of direction, I pulled over and regained my composure and went on with my route. All this took place within 15 mins with no loss of time.I lost sight by going close to the tree line it appeared to be over, trees obstructed my view.