While sitting outside around a fire, star gazing, thought at first site it was a satellite. unlike others i've seen this clearly pleated white light. it went from star like brightness to nearly dark. constant path and pulsing. bright to dark and back again. seemed to take about 5 seconds to from bright to dark back to bright. no sound, no blinking. no change in cycle across entire sky. flew west to east. saw for just 1 or 2 minutes. may have been satellite but do any pulse? sky was completely clear, no clouds.