stepped out to smoke a cig looking due west .I saw from the south a bright ball going straight across the horizon about 20 degrees up (at the closest it was over Utah the farthest ?)the trail behind it was huge with an object trailing behind about a fingers width. At first sight I thought it was a plane (to low to fast)from south to north horizon aprox 8-10 seconds. Lost sight on the north horizon behind the mountains. looked at the clock right after.