The model made by Abu Ubayd al-Juzjani didn't work

 They tried to make a new model all the way into the ---- century.

the Ptolemaic model went against everything in - - - - - - - - - physics.

(pay attention to spelling :])

The ancient Islams and Arabs were trying to create a more accurate model

they explored astronomy to improve upon the ------

The religious holidays were ----- and -------

The religious holidays were very time -----------

They wanted to use the ----- to be as accurate and concise as possible