It looked like a star at first but since when do stars move in an octagon motion i went inside to get my bill of lading and came back out to see its movement was now in trianle shapes...like it was trying to make a triangle shape..I drive fuel truck at night(( and no i don't huff the fumes.)) It was to the south about 11 o clock if facing west and looking S. to N. there are mountains all around (( the Big Horns )) the sky was Clear i just looked up and saw what looked like a star but ive never seen a star move in the the direction of a octagon and I went in the builing to get my bill of lading for my load of fuel and came back out and seen it moving in a triangular motion I thought i was doing it w/ my eyes thinking it was in my head so i held my head w/ both hands to be sure i wasn't moving my head...and low and behold I WASN"T...it lasted about 10 -15 min..and then it was gone..