Flashing orange lights, stationary but abruptly grow dim. Pulsating with small beams of red and white.Two orange flashing lights that were stationary, seemed to be flashing small beams of white and red. They were not as high as the airplanes (we are approx 30 miles from Phoenix Sky Harbor, we see a number of aircraft daily). One abruptly went dim but the other flashed longer, tried to video with camera but can only see small pulsating light in the recording. They were southwest from my vantage point. I would not have even noticed because of the many aircraft regularly in my vicinity, but bright, stationary lights that pulsate, then dim, then begin to pulsate, before disappearing, is odd. Using field glasses I could see they were circular. They did not move but seemed to be hovering. Very odd and I have to say after wracking my brain for logical explanation, this has left me scratching my head.