ASTER is the Advanced Spaceborne Thermal Emission and Reflection Radiometer, an imaging instrument on the satellite Terra.

The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is an imaging instrument on board Terra, the flagship satellite of NASA's Earth Observing System (EOS) launched in December 1999. ASTER is a cooperative effort between NASA, Japan's Ministry of Economy, Trade and Industry (METI), and Japan Space Systems (J-spacesystems). ASTER data is used to create detailed maps of land surface temperature, reflectance, and elevation.

asterweb.jpl.nasa.gov

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