@klevn I'm wondering how to account for stars 'travelling' the opposite direction in the southern hemisphere on a flat earth? Also, they do a ton of astronomy these days and it all works because of the math involved in the globe model. How to explain thousands and thousands of people who rely on the statistical presumption of a globe spinning in space during the course of their daily observations?

Circumnavigation in the southern hemisphere is either 12,000 miles or its 60,000 miles (rough comparison) but it can't be both. People have sailed it and flown it - all we need to do is reference their journals and reports - many are public domain and therefore free.

I'll admit there are some mysteries and gaps in our collective knowledge, but I don't think this is one of them. I'm interested to hear how a serious 'flat earther' would answer my questions