I was on the roof of my house in gilbertsville waiting for a nasa rocket launch in the southwest sky when i looked to the northwest and saw an object that i at first thought was a plane but it was not moving and it was strobing red and white, i started to watch it when it moved straight up then stopped and the lights went from strobing red and white to strobing just red then it went to solid red, after that it started moving across the sky towards the west then it dropped down a little bit then it started to move away from me until it disappeared. about five minutes later i looked back in the direction i had seen it and it was back. just hovering near a radio tower outside of boyertown it went through several light cycles between red and white strobing the. red strobing then white strobing then solid red and solid white then the lights would dim and then get real bright. after that it started moving across the sky left and right then it dropped down to treetop level then it went up several hundred feet the then it was gone.