nothing can move faster than the speed of light in a vaccum

https://www.kobo.com/us/en/ebook/an-infinity-of-worlds

might be what you’re looking-for…

VoterFrog, here, & Sims, give much better views than most articles on it, tbh, & that book also helps.

& if you want to get into Time…

Carlo Rovelli has some yt vids, including a lecture ( for us humans, not for the physicists ) on Royal Institution’s channel, & his book “The Order of Time” might be of interest to you…

https://www.youtube.com/watch?v=-6rWqJhDv7M

His point that you can’t measure time, but you can measure change… seems valid.

& if “space” is actually a kind of process…

good luck, eh?

_ /\ _

nothing can ever move faster than light speed

…pr space-time ‘unit’ ? If max speed is defined inside spacetime, then what if space it self expands everywhere ? So the speed is a limitation of the rules governing a ‘medium’, but the medium it self might not have such limitations.

[contrived analogy] If you start to swim in a large and 20m tall swimming pool, you have a max speed. Imagine everything in the pool have that max speed. Now imagine that the poolwalls suddenly disappears and the water column drops. At the ground, water would make a pan-cake shape, where water moves faster on the edge than in the center. Objects would flow with the water, and still have the same max speed as before. Objects at the edges now moves at the water expansion speed + max speed. Objects relative to other objects in the pool can move away ‘globally’ from each other at many times the max swimming speed, while maintaining the ‘local’ max speed in the water.

This is horrible cosmology/physics on many levels, and I probably made someone go to, or roll over in their grave, but it was the only ‘medium expanding’ analogy I could come up with on the spot. Apologies for the inflicted cognitive dissonance…