local time on June 22, 2019, when a vast plume of ash and volcanic gases shot up from its 700-meter-wide crater. The dormant period ended around 4:00 a.m. The small, oval-shaped island most recently exploded in 1924 and in 1778. The broad spectral coverage and high spectral resolution of ASTER provides scientists in numerous disciplines with critical information for surface mapping and monitoring of dynamic conditions and temporal change.įrom NASA: Unlike some of its perpetually active neighbors on the Kamchatka Peninsula, Raikoke Volcano on the Kuril Islands rarely erupts. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and data products. The instrument was built by Japan's Ministry of Economy, Trade and Industry. With its 14 spectral bands from the visible to the thermal infrared wavelength region and its high spatial resolution of about 50 to 300 feet (15 to 90 meters), ASTER images Earth to map and monitor the changing surface of our planet and is one of five Earth-observing instruments launched Dec. The image, acquired in October 2004, is a composite of ASTER bands 4-2-1 displayed in RGB. Found upon these rocks are 3.45 billion-year-old fossil stromatolites, colonies of microbial cyanobacteria.
The iron-rich rocks formed before the presence of atmospheric oxygen, and life itself. 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.From NASA: The Pilbara in northwestern Australia exposes some of the oldest rocks on Earth, over 3.6 billion years old.
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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