4 ms·
> space moves faster than light I think this simply refers to the metric expansion of the universe [1]. While nothing actually travels FTL, the distance betwee
by gpderetta 3y ago
> space moves faster than light
I think this simply refers to the metric expansion of the universe [1]. While nothing actually travels FTL, the distance between some objects really expands faster than FTL and is not an illusion.
[1] https://en.m.wikipedia.org/wiki/Expansion_of_the_universe https://en.m.wikipedia.org/wiki/Expansion_of_the_universe
- mjburgess 3y agoThe illusion is the impression that something moves faster than light. 'distances' arent literally 'expanding' -- this metaphor of expansion describes a shift in the matter distribution of the universe over time which seems like an expansion of an underlying substance 'space'. This is the illusion. The metric is just that matter distribution. And the fact of its changing we call 'expansion'. This metaphorical, substantival language, creates a lay impression that some physical object moves faster than light.