The U.S. and Japan on June 29 jointly released the most extensive digital topographic map of the Earth ever created, based on measurements from NASA’s Terra spacecraft. According to NASA, the new map covers more of our planet than ever before — 99 percent of the Earth’s landmass — and was created from almost 1.3 million individual stereo-pair images collected by Japan’s Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument carried aboard Terra. NASA and ...

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