hehehehe, While humans have actualy gone around the earth, and seen that is in fact a sphere,which is in the only criteria for scientific proof,:ie repeatable observations by credibel humans, this is not the case for the earth orbiting the sun, as no one has gone strait out far enough to see it happen ,and it is an infered phenonimon.Science has a rubber ruler problem. Where this is very important is in the habitual use of the most strict form of scientific proof, for things like ancient peoples crossing oceans and settling continents.....leaving there mark thereupon