I was walking down the road, coming from a friend's house at night. I like to look up at the sky to see if I can see anything, so I was sky watching on my way home. I observed what appeared to be a satellite, or maybe a high-flying airplane flying on a roughly easterly course. I watched for a few minutes, and then the object suddenly made a near 180 degree course reversal and was coming in a roughly westerly direction. The object didn't stop or slow down to make this course change. Seeing as how I was in 6th or 7th grade at the time, it kind of freaked me out and I went inside. Even at that age, I knew that no technology we currently had could make that kind of course change without stopping or slowing down.