Here is what I was reading a few moments ago, this is taken directly from wikipedia on the topic of the speed of light.
The finite speed of light is important in astronomy. Due to the vast distances involved, it can take a very long time for light to travel from its source to Earth. For example, it has taken 13 billion (13 × 109) years for light to travel to Earth from the faraway galaxies viewed in the Hubble Ultra Deep Field images. Those photographs, taken today, capture images of the galaxies as they appeared 13 billion years ago, when the universe was less than a billion years old. The fact that farther-away objects appear younger (due to the finite speed of light) allows astronomers to infer the evolution of stars, of galaxies, and of the universe itself.
I read this and immediatly saw a massive inconsistancy that stood out so plainly to me. But now as I think of it more I believe with the proper calculations I could arrive to the exact speed of the universes uniform expansion if this is somehow correct. But first I will raise the inconsistancy as I saw it.
The universe is supposedly 13.75 billion years old, but yet the universe had somehow expanded enough in a mere 750 million years that light traveling from the furthest part of the universe from us took 13 billion years to reach us.
This is a inconsistancy unless we ourselves are currently moving so near to half the speed of light in the opposite direction that it took that long for light to catch up to our velocity of expansion. Half the speed of light since if we were moving at over 50% the speed of light in the opposite direction the light from the opposite moving galaxy simply wouldn't have the velocity to match our own and reach us.
750 million years passes, then 13 billion years for light to span the distance between the 2 uniformly expanding galaxys.
This is the calculation to determine our combined speed away from said galaxy by calculating the speed of light over 13.7billion years times our speed to equal the speed the time it took light to take 13 billion years to reach us.
299792458 a second
17987548480 in minute
25902068371200 1 day
9454254955488000 meters year
122905314421344000000000000 13 billion years.
129806920538850240000000000 13.73 billion years
Distance traveled by light over 13.73 billion years*our speed=distance it took the light from 13 billion years to travel to us.
We are traveling .473 the speed of light from said galaxy, while it is moving .473 the speed of light in the opposite direction. Or a combination of 2 speeds that would equal 94.6% the speed of light.
.9468317553 speed of light combined velocity away from each other.
This is all probably very flawed theory but there are certain measurements I can take that are set. Like they were specific it took that light 13 billion years to reach us, which means we had been moving away from each other already for only 750 million years. But it still took 13 billion years to span the steadily expanding distance between us and that galaxy. Of course I am taking into account that we are moving at a steady speed and not a variably increacing velocity as is assumed. That the unverse is not only expanding but also accelerating that expansion. Which would be insane, because if we moved so much slowly, it would mean that we were moving well over half the speed of light away from the galaxy for it to reach a speed to make it take 13 billion years to reach us if our velocity was so low to begin with.
The set measurements that I am going by is the speed of light, the universes age, the time it took for this light to reach us.