An ISS Pass in Constant Sunlight
This video was taken by the crew of Expedition 34 on board the International Space Station. The sequence of shots was taken on January 6, 2013 from 11:53:05 to 13:32:53 GMT, on a pass from eastern English Channel, just east of London, making one complete orbit to the Adriatic Sea, east of Pascara. This video primarily features the ISS in constant sunlight, with the sun never setting below the horizon during the crew's 90 minute trip around the Earth. The sun looks to be making a circle above the horizon. This can occur when the ISS has orbit tracks that ride along the terminator line (the visible line from space that separates daylight and night).
Small flecks of light and lines are glare and reflections in the window of the ISS.
Video courtesy of the Image Science & Analysis Laboratory, NASA Johnson Space Center