RELATIVITY AND COSMOLOGY
It is suggested by way of analogy that; our universe in its expansion can be compared to a balloon with beads on it. As the balloon blows up with more air, so the beads get further and further away from each other. This makes sense only because the beads are on the outer rim of the universe. But, we are not on the outer rim of the universe and neither does anyone know where the outer rim is.
Rather, if we were in the middle of the balloon, floating around, and the edge of the balloon was expanding, then it would make no difference in the distance of the beads within the balloon. Therefore, the expanding balloon must have some other dynamic that is causing the beads within the balloon to grow further, and further apart.
Now, for argument sake, if the first theory was correct then, even if the balloon expands, the beads in themselves would also expand relative to the expansion surface of the balloon. Take for instance a dot made by a marker on the balloon; when the outer surface of the balloon expands so does the dot expand relative to the surface area. If this is correct then maybe someone should measure the circumference of our earth and see if it has expanded and grown larger than it was, say, 100 years ago.