@armezi

On cosmic scales, time retains meaning but becomes profoundly relative and context-dependent.In general relativity, time is not absolute—it stretches near massive objects (gravitational time dilation) and nearly stops at event horizons. On the scale of the entire observable universe (93 billion light-years), cosmic time remains a useful coordinate: the universe has a well-defined age (13.8 billion years) measured from the Big Bang in the comoving frame.However, for distant galaxies receding faster than light due to expansion, no future causal connection is possible—making "now" for them meaningless from our perspective. At the heat death horizon (in ~10¹⁰⁰ years), thermodynamics may render meaningful time arrows impossible.So time still "exists" and matters, but its universal, shared significance fades dramatically at the largest scales. https://en.wikipedia.org/wiki/Cosmic_time https://wwwmpa.mpa-garching.mpg.de/~henk/pub/die.html

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