Timbuktu is in the West African Nation of Mali, about 15 km north of the Niger River, at the intersection of an east-west and a
Timbuktu is in the West African Nation of Mali, about 15 km north of the Niger River, at the intersection of an east-west and a north-south Trans Saharan trade route across the Sahara. It was an intellectual and spiritual capital in the 15th and 16th centuries, and a centre for the propagation of Islam throughout Africa. With its 14 spectral bands from the visible to the thermal infrared wavelength region and its high spatial resolution of 15 to 90 meters (about 50 to 300 feet), ASTER images Earth to map and monitor the changing surface of our planet. ASTER is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite.
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Photo credit: © World History Archive / Alamy / Afripics
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