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by qyv 2362 days ago
> However, as you go further and further out from our galaxy the metric expansion of spacetime begins to dominate the relative motion of all bodies, leading to observing progressively redder and redder light curves. A galaxy billions of light years away is perceived to be moving away from our reference frame at a significant percentage of the speed of light!

Is this not because there is simply more space between things that are farther away and therefore more expanding space? So, more space = more magnitude of expansion?

1 comments

I think that's exactly the idea. But if space expanded at the same rate everywhere and forever then the relationship would be linear. But it seems that further objects seem to be moving away slower than linear relationship would suggest which might mean that earlier space expanded slower.
But that doesn’t make sense. Here space expands n. Go a distance d away and now you have nd! So if we were to integrate the summation of nd!+V (velocity vector) Spaces, wouldn’t the relationship not be linear? You have an infinite amount of points between A and B. Each point expands at v. Each time point pk+1 is created you are introducing a new expansion that will then add as many expansions as are vector / dimensions at play.

I know my maths is not very accurate and maybe you can help correct my understanding. It just seems adding up each point that creates even more expanding points would never be a linear function.

I’m literally describing creating more flow lines which would cause an exponential growth in acceleration measured without really exceeding certain values.

Don’t understand the downvoted when I asked for more information and said my maths are probably wrong.