I know a thing or two about the geocentric model and might beable to shed some light on specifics. First off many geocentric's don't think the earth is a flat disc.

theres more then one view on the subject. Earth or terra firma (the land beneath our feet) might be a never ending plane akin to the how people view the universe as endless.

some view our earth as a closed in biome. iv talked to many people about this and not one of them believes that bullshit about a flat disc just chilling out there outer space.

well were on the topic of space we should talk about the planets and stars. so the word planet comes from the word plantea. which was wondering light. every single star in our sky rotates around the north star. its been like this for as long as humans studied the sky. nothing changes ever. They noticed that out of every star there are several that have there own path. the wonderers. these are our "planets"

all of which (along with the sun and moon) reside within the firmament, meaning theres no such thing as "outer space" galaxies or even planets, just us.

I was also very interested in astronomy when i was younger. watched the hallbop comet with grandpa when i was kid.

according to mainstream science the milky way galaxy is moving thru space at 800 000 km/h, "redshift" also indicates that everything is moving away from us and each other at equal speeds. non of this makes sense when you realise the stars and constellations in the sky have appeared to be the same for 1000s of years.

theres alot to it but if you got any question ill try and answer them.