ok. the FAQ doesn't give me alot. so lets just start with some stuff i can think of to prove the earth is round. ok mars...its their. there is no doubting it. when mars is really close to the earth, you can take a telescope, or even just a camera with a powerfull zoom (which i have done) you can see it! the red planet, craters and all. ok so, since mars is only the closest to earth every bunch of years (last time was about 5 years ago) that means it has to be revolving around the sun. and if the sun is as small as you say it is, then that would be impossible. therefore mars, AND THE EARTH have to be rotating around the sun and the sun is alot bigger then the earth because big things don't revolve around small things. now, if a flat earth was rotating around the sun, there would be light on the earth at all times (which there is not.) why you may ask? pretend you are holding a frizbie horizontally. this frizbie is the earth. now if you line up a flash light with it and turn it on, the is gonna be light all over the surface of the frizbie, you can spin the frizbie as much as you want, but there will be light on the surface. unless you vertically spin the frizbie. but according to to this site, then you would just fall off.