A fast moving point of light that changed direction very quickly, also going around in a circle.

I happened to look out a west facing window to see if my solar lights were working at end of my driveway, and saw a plane with its lights flashing over my house, then I noticed a fast moving non blinking light through trees to the west that was changing direction quickly. It seemed far off and I thought it must be moving very fast. It made right angle turns and at one point it was going in a circle. I braced my head on frame of window and made sure that it was moving like that, and not me. Also could see its progress compared to sparsely spaced branches on tree. Am convinced that it wasn't an optical illusion and was some kind of craft. I know that stars will seem to move in a circle when standing outside, just because of your head moving slightly. After about 3 minutes, I blinked and it was gone. This the first time I have seen something I couldn't explain. Just a point of light.