I was entering my driveway coming from work. I saw this object shoot straight across my backyard directly in front of me or at least it seemed that way. I was unsure of what the object was. My first thought was that it was alien like as it seemed to come from my neighbors yard to my right and wanted to disappear upon my entrance. However, upon second thought, the object was clearly meteor like in that it had flame and sparks coming off of it. The center of he object was a glowing reflective silver color. The best description would be like a ball of mercury. The object seemed to be very low to the ground and had flames as well as sparks coming from it as it shot swiftly across my yard. My feelings about the siting were as I stated above. I thought it was perhaps an alien ship of some sort but then thought it could be some type of meteor because of the flame and sparks coming from it. The object shot across my yard and seemed to descend as it disappeared behind the tree lines to the left of my position as it came to the end of the trailer park which was just over two trailers to my left. (Less than 500 yards).