This was taken from the STEAM gaming online program. I’ve found it very interesting and decided to make a video out of it. It has a very good introduction to the Flat Earth Theory. I did some little experiments at the end, hope you’ll find them interesting as the program allows you to play with the sizes of the Sun and the Moon, distances, views, etc.
Gleason’s Flat Earth Map from 1892: https://www.digitalcommonwealth.org/search/commonwealth:7h149v85z
Flat Earth map by Urbano Monte from 1587: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~303661~90074314:Composite–Tavola-1-60—Map-of-the?qvq=q%3Apub_list_no%3D%2210130.000%22%3Bsort%3APub_List_No_InitialSort%2CPub_Date%2CPub_List_No%2CSeries_No%3Blc%3ARUMSEY~8~1&sort=Pub_List_No_InitialSort%2CPub_Date%2CPub_List_No%2CSeries_No&mi=0&trs=94
