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The USGS created its first map in 1879.
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In the 1950's a coast guardsman prepared to take pictures during a flight.
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In 1972, the National Aeronautics and Space Administration (NASA) launched the first Landsat satellite.
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In 1999, a team of scientists from the American Mueseum of Natural History used Landsat images to find a new site of dinosaur and early mammal fossils in the Gobi Desert.
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One of the first known maps was made on a clay tablet about 2300 B.C. in ancient Sumeria.
