- Black Image = International Space Station (ISS) is on the night side of the Earth.
- Blue Image = Communications with the ISS is not available.
This is a live video feed from on of the outside ISS video camera’s that can be operated from within ISS and from mission control.
The Ustream video from ISS is available only when it is in contact with the ground through its high-speed communications antenna and NASA’s Tracking and Data Relay Satellite System. When there is no signal you will see a blue screen.
ISS orbits the Earth once every 90 minutes. You will it sees a sunrise or a sunset every 45 minutes. When ISS is on the night side, the external camera may appear black, but also may provide views of city lights below, or a view of the exterior of ISS. You may also hear some communication between astronauts and the ground station.