I saw a strange light in the sky the turned from blue to white continuously and zigzagged like a snake.I was taking out our puppy to go potty and I looked up in the sky and saw what looked like a star dropping straight down from the sky. It didn't go sideways like most shooting stars. Then immediately after seeing that, I saw what looked like a tiny star moving like a snake through the sky. The color gradually changed from blue to white, blue to white, continuously until it just disappeared after about 20 seconds. It looked further than any airplane could go, because the light looked smaller than the stars.