The Origin of the Universe Is Expansing, Right?

In the early universe, there was nothing circular. We don't know what that was. A science simply isn't equipped to explain it or understand it or detect it. So as things expanded though, in those first few seconds, and today things are still expanding, right? Things are expanding and things are cooling down even as we speak. Literally every second that we're on the earth, we're expanding and well, not us, but the universe is expanding and cooling. Our region of the universe, which is something like 90 billion light years across, is no longer expanding. But other parts of the universe are expanding.