Tuesday, October 28, 2008

He wrote Cosmos and Billions and Billions born 1934, died 1996 http://www.imdb.com/name/nm0755981/biohttp://www.imdb.com/name/nm0755981/bio

Ptolemy was born in 65 A.D. and died in 165 A.D.


Very influental greek


Made the book Almagest









Aristotle was around in the 4th century




His teachings are called the Arganon








http://www.philosophypages.com/ph/aris.htm



Hipparchus 190 to 121 B.CE.

He discovered the precession of the equinoxes





http://www-groups.dcs.st-and.ac.uk/~history/Biographies/Hipparchus.html



























































No comments: