You certainly have heard that there are quite a few people who believe that the earth is flat. And they seem to be serious. Take a look at this video: https://www.youtube.com/watch?v=tqYMe-u0NHM
OK, I am not quite ready to join the Flat Earth Society yet. But maybe I can offer a compromise. Here it is: the new SkyCart “World Edition”. It is an airline trolley which is flat on all six panels. If the world were to look like that it would allow the sun to orbit around it freely. Maybe we should create a new theory that would satisfy both, the Flat Earth Society and NASA?