Looking at the Earth from the ISS
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You can view live Space Station video that includes Earth views from external cameras 
on the International Space Station during crew off-duty periods. Also available form 
the NASA website are selected in-cabin views of crew activities during the crew 
on-duty periods and a graphical world map that depicts the station’s location in orbit 
above the Earth using real-time telemetry sent to Mission Control from the station.
 
The video stream is accompanied by audio of communications between Mission Control and 
the astronauts when available. During times when the shuttle is docked to the station, 
the stream will include video and audio of those activities.
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, the 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 colour bars. 
Colour bars or a black screen do not necessarily indicate a problem with the video 
stream. The streaming video is being webcast as part of NASA's celebration of the 10th 
anniversary of the space station in orbit. 
See www.nasa.gov/station

(RSGB-News)