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6700 BCE
map of Catal Hyuk
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3000 BCE
Babylonian clay tablets
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3000 BCE
first map of the moon
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600 BCE
map of Babylonian empire
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600 BCE
Pythagoras determines earth is a sphere
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200 BCE
Eratosthenes determines circumference of earth, establishes coordinate grid
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150 BCE
Hipparchus creates early system of latitude based on the sun
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150
Ptolemy creates world map with coordinates for 8,000 locations
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476
Roman Empire collapses, scientific cartography halts in Europe
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Jan 1, 830
Al-Khwarizmi produces world map partly based on Ptolemy's work
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Jan 1, 1030
Al-Biruni develops triangulation
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Jan 1, 1375
Abraham Cresques produces world map using portolan maps
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Jan 1, 1569
Gerardus Mercator publishes his first projection for navigation
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Sextant developed
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John Harrison develops accurate clock for determining longitude at sea
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International Meridian Conference chooses Greenwich as the prime meridian
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High-quality maps produces from aerial and satellite imagery and geographic information systems (GIS); global positioning system (GPS) developed
