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[[Image:Ptolemy.gif|thumb|200px|Ptolemy]]
[[Image:Ptolemy.gif|thumb|200px|Ptolemy]]
'''Ptolemy''' (c. 90 – c. 168 AD) was a Greek mathematician, geographer, astronomer, and astrologer
'''Ptolemy''' (c. 90 – c. 168 AD) was a Greek mathematician, geographer, astronomer, and astrologer.
Nothing is known about where Ptolemy was born or lived during his life. But he is known for his study of the heavens and for his maps. He was one of the first to try and make a complete description of the stars and planets. His model was [[Geocentric theory|geocentric]] and showed the other planets and stars as they appear from Earth.
Nothing is known about where Ptolemy was born or lived during his life. But he is known for his study of the heavens and for his maps. He was one of the first to try and make a complete description of the stars and planets. His model was [[Geocentric theory|geocentric]] and showed the other planets and stars as they appear from Earth.