I was driving down a local road in my town w/ two friends, when me and the passenger in my car saw a large ball shaped object flying througth atmosphere, and it appeared to have an extremely long tail behind it (sparks, fire). As we pulled into a local plaza we noticed that the ball lost its firey tail and had started to hover motionless in the sky. Then suddenly it started moving and within a matter of 30 seconds the object and lights vanished in thin air. I am an avid ufo follower and this was my first real life sighting. I can garuntee that this was not a conventional aircraft.