The geocentric model was refined by Claudius Ptolemaeus (also known as Ptolemy) in his treatise Almagest. (Image credit: Photos.com via Getty Images) Assumptions of the geocentric model ...

Claudius Ptolemy was a Greek mathematician, astronomer and geographer who lived in the Egyptian city of Alexandria while under the rule of the Roman Empire. Much of medieval astronomy and ...

This article was originally published with the title “ How the Geocentric Model of the Universe Worked [Video] ” in Scientific American Magazine Vol. 310 No. 1 (January 2014) doi:10.1038 ...

This geocentric model, though it had floated around since 6th century BCE, was written in its most elegant form by Claudius Ptolemy in 140 AD. When this model encountered problems, such as the ...

Following the theory of heliocentrism, ... the geocentric model became more widely recognised. Egyptian astronomer and mathematician Claudius Ptolemy overcame this problem with a new theory, ...

The geocentric model of the universe is a good analogy for Roe v. Wade. From its birth, the case had no grounding in the Constitution. None. And that flaw was patent to everyone.