White light zooming very fast across the sky.I am a 34 year-old doctor of clinical psychology. I was walking my two little dogs. It was after 11pm but before midnight. I saw a light, much bigger than a star, but much smaller than the moon, zooming across the sky. It went east to west, or from north-east to south-west, in a straight line and disappeared into the clouds. The whole evet was south east to my location. It moved so fast that it crossed about 1/3 of the sky in about 1 second. It was so fast that I could not notice details about the form of the light. I was under the impression it was not a perfect circle, but it was really hard to tell. I would also say it stayed the same size as it zoomed across the sky, but again, I could not be 100% sure. The light’s color was white, just like the moon. I continued looking up to the sky for several more minutes but saw nothing else unusual. There were airplanes going by, slow and steady, with much smaller, blinking lights, and looking nothing at all like the other light I saw.