Ptolemy’s contribution to astronomy

We are going to write an essay on the subject of “Ptolemy’s contribution to astronomy!” using a scientific viewpoint. Since this will be a Science report, reliable and recent material, and discoveries should be included (as much as you can). The goal of this practice is to learn how to find reliable sources and collect facts that can be supported by real observations/experiments. Not everything you find on the web is reliable, especially the first few links on your google search may not be reliable unless otherwise evaluated.

You can start your search with Wikipedia and learn about the keywords. But you have to be careful with so-called Wikipedia facts since they may not be true. It is very important to check the facts you report from any sources (including the NASA website or government website). You must search and investigate the claims to make sure that they are correct (do not assume that you read them on the NASA website so they MUST be correct!). For example, if you read in many sources that ” … Galileo discovered the planet Mars in 1610 AD…” and you report this incorrect fact in your essay then you will lose full mark on that section of your report simply because Mars was known to Babylonians and Greeks thousands of years before Galileo. You have to try your best to distinguish between real facts and made-up facts!

You can start by watching the following videos and start with the following articles.

What Is The Geocentric Model Of The Universe? https://www.universetoday.com/32607/geocentric-model/