by @davidweiss on DITRH - Deep Inside The Rabbit Hole
View my bio on FlatEarthDave TV: https://flatearthdave.tv/c/ditrh 
The sun we see appears to not be a physical sun but rather a reflection or projection from a source that is outside of our grasp.
Graphics model: http://walter.bislins.ch/bloge/index.asp?page=Flat+Earth+Dome+Model&state=--6~25.336788-1114.89362-12.2901554-1~195.85492-127.637651-2296-11.7115717-12404.4819-10-10-10-11-70.90673575-3