3ft round silver ball hovering down street and moving in seemingly precise pathAs I descended down the stairs of my home about 8:15am to go into the living room, I noticed out the front window what appeared to be a silver ball (about the size of a large fitness ball) coming down the street. It caught my eye because of its shiny, bright reflection. It appeared smooth and without ridges or seams.I really paid attention as it made a sharp left into my driveway and across my front yard. At that point I could see that the object was not rolling as I had expected, but instead seemed to hover roughly 3 feet off the ground. There was no waiver in its movement. It was perfectly round and reflective so I was unsure if it was spinning or just travelling in a stationary position.The sphere moved out of sight and I did not go outside to pursue it.((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))