Strobe flashes moving in a way which no space- or air-craft is capable of Strobe flashes White/Blueish 0f high energy. Moving in a way which no airliner or aircraft can do.The strobe flashes (freq ca 1 Hz)moved forward suddenly backward, forward again in one yump 90° of track back to track forward and disapeared in a curve in a haze.The sky was clear without clouds. The event took place next to the milky way in an observer angle of appr. 60° left of our desert camp.The event was withnessed by 4 persons. My wife and me are pilots and we cannot explain this event.Over the area we were is no airway or airtrafic. We were enjoying the evening sky and stars as suddenly the strong strobeflashes draw our attention.First we thought we saw the strobe of a military aircraft.As the flashes jumped backwards my wife and me noticed that no air or spacecraft we know is capable of doing this.Wadi Hamra (N23°41,576 E27°07,693) (Egypt)