As I was traveling South on US 431 between Belfast and Petersburg, I saw a white light shoot across the sky. It appeared to be in our atmosphere parallel in direction from the ground. Size of the light was a lot larger then a star, it's hard to describe the size of anything. If you placed a tennis ball 15' in the air it was around the same size as that would be in relation to it being high in altitude, much larger then a star. It had no curve in its path with a direction of mostly South, if anything it was south-southwest.Law Enforcement