The earth cannot and will never be flat, round or circle. The earth is a sphere and have posted several proofs to show that the earth is a sphere on this site. The question was closely related to this one. One and the major reason is, the earth's horizon. If the earth was flat, could it be possible to see the earth's horizon?? Never possible at all. This proves that the earth is spherical in nature. Another proof is circumnavigation. You can go the whole world but you'll come back to the same same place otherwise you'll have landed in another place. Many people still believe that the earth is flat and coming up with some proofs.This isn't real and I won't believe any of those proofs because the one's I have am already satisfied that the earth is a sphere.