Carnot-Moon, Pennsylvania (United States) Sighted on Tuesday 10. February 2009 Reported on Tuesday 10. February 2009 Shape: Flash | Duration: 00:00:05 Source: MUFON Was driving home with my girlfriend and we saw a huge flash that was yellow at first then changed to blue/green. Only lasted a few seconds. It was a clear night no clouds and the flash made no noise.