International Space Station passes mistaken for UFOs

Bright, slow-moving passes of the International Space Station (ISS) over Seattle have frequently been reported by residents as unidentified lights. NASA provides pass predictions for Seattle and local media and law-enforcement agencies have repeatedly attributed many local UFO reports to visible ISS flyovers. The ISS typically appears as a very bright point of light moving steadily across the sky, making it a common source of misidentified aerial lights in urban areas. Community astronomy groups often use ISS pass events in Seattle for public viewing sessions.