Non-blinking white spherical-shaped object traveled northwest to southeast - appeared to be a very large meteor falling thru atmosphereWaiting on the bus, I looked up in the sky, which was partly cloudy with semi-transparent to thicker clouds. I saw traveling in the sky from the northwest a small white ball. It did not blink, like an aircraft, and there was no red or green blinking lights. Just a small circle of light-- large enough to cast a shadow had it been lower in the sky. It was moving quite fast, but not like a meteor that shoots across the sky. Faster than a plane – like a meteor in slow motion. I am fairly certain it was not an airplane. I am a legal assistant and commute to Seattle every week day.