re: Neat imagery anyway, thought I'd borrow them
Back then they always underestimated the size of the Earth. Even Columbus thought he'd landed in China. He was obviously a few miles short. With the exception of Eratosthenes in 230 B.C., whose estimate of earth's circumference fell short by only 736 km, it wasn't until the last few hundred years that semi-accurate estimates were made. In fact, not until recently did most people believe the earth is round.