GloVis is the USGS Global Visualization Viewer site that is a primary source of data from many sensors. This FAQ only covers ASTER data. Connect to the site at: http://glovis.usgs.gov/. This will use Java to open a data visualization window (it may be behind your current browser window). Note: You must be a registered user to place orders within GLOVIS.
NASA and the USGS both distribute full ASTER Level 1T scenes for immediate download and allow you to place orders for ASTER products. Examples of ASTER products include Surface Reflectance, Temperature, and Elevation. The full list of ASTER products are described at: https://lpdaac.usgs.gov/dataset_discovery/aster/aster_products_table.
The ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) sensor is an imaging instrument flown on the Terra satellite which was launched in December 1999. ASTER has been designed to acquire land surface temperature, emisivity, reflectance, and elevation data and is a cooperative effort between NASA and the Japanese Ministry of Economy, Trade, and Industry (METI). As of April 1, 2016 these date are being distributed free of charge.
