The flagship in NASA's Earth Observing System (EOS), Terra launched on December 18, 1999, and began collecting science data on February 24, 2000. Visit the Images and Data section for details on ordering data as well as status updates on all the sensors data products. Click the buttons to the right to read the latest releases about new Terra data products. Return here often to see the latest ...

ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) is a high resolution imaging instrument that is flying on the Terra satellite. ASTER will obtain detailed maps of land surface temperature, emissivity, reflectance and elevation of the Earth.

The MODIS/ASTER (MASTER) airborne simulator is a joint development involving the Airborne Sensor Facility at the Ames Research Center, the Jet Propulsion Laboratory and the EROS Data Center. The primary objective of the MASTER activity is to support the ASTER and MODIS instrument teams in the areas of algorithm development, calibration and validation. MASTER is essentially a clone of the MODIS ...

The ASTER spectral library includes data from three other spectral libraries: the Johns Hopkins University (JHU) Spectral Library the Jet Propulsion Laboratory(JPL) Spectral Library, and the United States Geological Survey (USGS - Reston) Spectral Library.