Ptolemy
This article is about the geographer Ptolemy. To read about Ptolemy, Alexander the Great's general, see Ptolemy I Soter.
Ptolemy (c. 90 â c. 168 AD), 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. He was one of the first to try and make a complete description of the stars and planets. He made the assumption that the earth was in the center of the universe, and the other planets and stars orbited around it. This theory was popular for nearly 1600 years.
But, although throughout the many years this idea was embraced several scientists tried proving this theory wrong, people refusehighly respected, no one doubted him. Also, people liked the fact that Ptolemy d to listen. Because Ptolemy was placed the Earth in the center of the universe, making it the most important.