Socrates is very important because he redirected philosophy.
Was the first person to have the idea that the Sun is in the middle and all the other planets orbit around the Sun.This idea is called the heliocentric theory.
Made 37 volumes of natural history.He wrote everything down that he thought was intresting.
Made the first recorded steam engine long before the modern steam engine was built.
Ptolemy was a great astronomer who started the thought that all the planets orbit around the Earth.That idea is called the geocentric theory.