Live Space Station Video includes Earth views from external cameras on the International Space Station during crew off-duty periods, selected in-cabin views of crew activities during the crew on-duty periods, and a graphical world map that depicts the stationâ€™s location in orbit above the Earth using real-time telemetry sent to Mission Control from the station.
Since the station orbits the Earth once every 90 minutes, it sees a sunrise or a sunset every 45 minutes. When the station is in darkness, external camera video may appear black, but also may provide spectacular views of city lights below. In addition, satellite coverage may be intermittent and result in a display of color bars. Color bars or a black screen do not necessarily indicate a problem with the video stream.