Science doesn't prove, though. Only provides overwhelming evidence in support.
Indeed. The only things in the realm of science that you can actually "prove" are those in the more theoretical based sciences like math and computer science, and that's only because those particular fields are based solely on rules that we made up ourselves (thus letting us know
all of the "base" rules to their full extent), unlike things like physics where we only know
some of the "base" rules, and those that we do know we only know to a limited degree of precision. As scientists work more and more on a given theory they are able to refine those laws to a higher and higher degree of precision, but AFAIK at this point it is actually impossible for us to ever reach the point of actually being able to "prove" something based on the physical world since everything we've done so far seems to indicate that many of the constants that it is based on are infinitely precise (like pi), meaning that you will always be able to calculate any given answer to "one more decimal point".
Which isn't to say, of course, that it is impossible that a base theorem like the world being a sphere could be overturned. It just means that anything that replaces it is going to have to give identical answers to what a sphere would in 99.99999999% of the time, since we have huge mountains of evidence pointing towards the Earth being a sphere. Quantum mechanics is actually a great place to see this in action right now, since we have about 10 different readily accepted theories floating around at the moment, all of which give
the exact same results for every single experiment we've ever done. The only places that they differ is in experiments that we
haven't done, since all of them, by definition, have to at least provide matching results for every single experiment already performed in order to have any chance at all of being closer to the "true" answer than the current ones are.