I have a question about accelerating expansion of the universe. My understanding is that Hubble said the farther our we look into the universe, the higher the redshift, therefore the faster things are moving.
But my question is, why is this surprising? If the universal expansion works like every other explosion (expanding quickly at first, then slowing as it grows), wouldn't this be exactly what we expect to see? I know I must be missing something as there are many people much smarter than myself working on it, but here's my reasoning, and I would appreciate some help:
Consider 3 arbitrary times in the history of the Universe $t_0$, $t_1$, $t_2$, where $t_0$ is shortly after the big bang, $t_1$ in the middle, and $t_2$ close to the present. Shortly after $t_0$ the universe is moving quickly, slower at $t_1$ and close to current rate at $t_2$.
If it's true that the farther out in space we look, the farther back in time we look, wouldn't $t_0$ be very close to the edge of the observable Universe, $t_1$ slower, and closer in distance to use, with $t_2$ being the closest?