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[[Image:Ptolemy.gif|thumb|200px|Ptolemy]]
[[Image:Ptolemy.gif|thumb|200px|Ptolemy]]
'''Ptolemy''' (c. 90 – c. 168 AD) was 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 assumed that the earth was in the center of the universe, and the other planets and stars orbited around it.
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 assumed that the earth was in the center of the universe, and the other planets and stars orbited around it.