The following step would be to collect data and make observations, so that a hypothesis can be formed.
Ptolemy would have made his observations in Egypt probably Alexandria around AD120 up to his death in AD168.
He urged people to use their sences to make observations, just as scientist today make observations
Practice improves your ability to make accurate observations.
Make sure it's in date and nothing been opened or bumbled
Make observations
A theory is an explanation or interpretation of observations that helps to make sense of them. Observations are the data or evidence that theories are based on. Theories are used to explain, predict, and understand observations in a systematic way.
Using observations, you can discover patterns in data and make an inference
Make observations
Observations
Make observations
observations