The night sky is clear tonight and i was outside briefly when i noticed a small pinpoint size starlike object moving diagonally from about 50 degrees up from the horizon in the south. it was moving seemingly faster than a satellite on a steep angle toward the southwest. at first it moved in a straight line downward and then it started to zigzag slightly – straight west then down – several times. that in itself changed my mind about it potentially being a satellite. then it grew to about 10x it's size and brightened for about 10 seconds and then regressed to its original pinpoint size and at about 20 degrees above the horizon it disappeared.