The top display on the right sidebar indicates which Landsat mission is being displayed, and indicates whether it is a recorded pass or near-real time live-streaming. They are turned on at a slightly different point in the return scan than where they were turned off, giving the imagery a jagged edge. The imaging detectors are turned off momentarily at the edge of the image. As the satellite travels above the Earth's surface, the sensor rapidly scans the viewing area from side to side. The edges of the feed appear jagged because of the way the Landsat sensors collect image data. Each pass has a swath width between 185 and 190 kilometers (115-118.1 miles). The image feed appears on the left hand side of the screen. The screen is divided between the main display and the sidebar controls. When no active acquisitions are being made, the most recent pass is replayed. The High Definition Earth Viewing (HDEV) experiment mounted on the ISS External Payload Facility of the European Space Agency’s Columbus module was activated Apand after 5 years and 79 days was viewed by more than 318 million viewers across the globe on USTREAM alone.EarthNow! allows users to see recent data acquired by the Landsat 7 and Landsat 8 satellites in near-real time. Thank You to all who shared in experiencing and using the HDEV views of Earth from the ISS to make HDEV so much more than a Technology Demonstration Payload! After HDEV stopped sending any data on July 18, 2019, it was declared, on August 22, 2019, to have reached its end of life. The loop will have “Previously Recorded” on the image to distinguish it from the live stream from the Node 2 camera. If the Node 2 camera is not available due to operational considerations for a longer period of time, a continuous loop of recorded HDEV imagery will be displayed. The camera is looking forward at an angle so that the International Docking Adapter 2 (IDA2) is visible. Node 2 is located on the forward part of the ISS.
Currently, live views from the ISS are streaming from an external camera mounted on the ISS module called Node 2.
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