You're correct, AE. We use the phrase because in the "center" of our solar system is the "sun". Blows the mind, doesn't it?
Not so much, actually. The idea that people are still clinging to outdated nonsense produced by Copernicus and Galileo and Darwin would be amusing if it wasn't so poisonous to society.
The amusing thing here is that we don't. We took what they gave and built upon it, corrected it where it was flawed, and moved on with progress. That is the beautiful thing about science--it's never content to rest on its laurels, and it never stops attempting to prove itself wrong.
You see, you have this idea stuck in your head that science is afraid to be proven wrong, because that's your own experience. If your religion is proven wrong, you are left with nothing. But proving itself wrong is the very foundation of the scientific method. You see, the way science works is, someone comes up with an idea, and then does his very best to break that idea to smithereens. If he can't, he passes it on to all the other people who study in the same field, and they all try to break it to smithereens. If no one can break the idea, then and only then do scientists grudgingly accept that it might be true--all while still trying to find new ways to break it.
This happens every day, with everything science believes to be true. Do you honestly think no one is trying to disprove Darwin? The first guy who does has a mountain of awards and money waiting for him. But no one ever has, because the mechanism works better than any other idea ever postulated. Darwin's knowledge was admittedly limited by his time--for instance, he had no idea what DNA and genes were when he proposed the idea of evolution via random mutation and natural selection. He had no clue what the actual mechanism of change was, what it was that caused a beneficial trait in a parent to be passed on to offspring. But he understood the reason why those offspring fared better than their peers who didn't have that beneficial trait. Every discovery in biology has supported his idea, while not a single fact has been found to disprove it.
Heck, we even use some models we know to be false, because any model is better than no model. Did you know the theory of gravity is inherently broken? As is the theory of relativity? There are scales where they simply no longer apply, but we continue to use them because they are workable for the scales they do function at. Scientists are working every day to better understand the relationships between the forces involved here and come up with new, better ideas--not to spite those who came before, but to honor their memory by expanding the boundaries of human understanding, as the great minds of the past did.
That's the real difference between people like you and people like us. We strive to be proven wrong, because being proven wrong is the only way to gain new knowledge, new understanding. Being proven wrong is the only way to slowly reveal the truth of the universe. But you? You want to believe you already have the truth, and so reject even the most overwhelming of evidence to the contrary. You are content to sit in ignorance, because in ignorance you get to believe you aren't ignorant.
I seriously pity people like you. We only get one shot at life, and you're wasting yours for the promise of a reward you have no way of proving actually exists.