The map, known as a global digital elevation model, was created from images collected by the Japanese Advanced Spaceborne Thermal Emission and Reflection Radiometer, or ASTER, instrument aboard ...

with lower-resolution digital elevation model (DEM) data to create pixel-scale DEMs at a two-meter resolution. This new method is not limited by the coverage constraints of NAC-derived digital ...

This first-ever global digital-elevation model (DEM) of Mercury combines more than 10,000 images acquired by the spacecraft to take viewers across the wide-open spaces of the tiny world.