lines in the sky

I was sitting in a lawn chair, in my back yard, taking pictures of the sky, a couple every minute. I put them all together into a moving gif.
And this is what I saw:




There are 42 pictures in the b&w and 43 in the colour, shown at 10/100 of a second, of the same thing, so they will synchronize
every 3 minutes, and .6 seconds.

I made a video with the complete series of pictures: