4 ms·
But how can something that is further away than the maximum travel distance allowed by the time elapsed since the big bang exist? Is there a non-locality of the
by ank_the_elder 11y ago
But how can something that is further away than the maximum travel distance allowed by the time elapsed since the big bang exist? Is there a non-locality of the time dimension that makes it so? Was the expansion rate of the universe faster than the speed of light? Or... what?
- goodside 11y agohttps://en.wikipedia.org/wiki/Metric_expansion_of_space https://en.wikipedia.org/wiki/Metric_expansion_of_space The short version: The distant object wasn't traveling through space, it sat stationary while more space came into existence in the gap between us and it, resulting in it being farther away. This happens everywhere, all the time -- it's what cosmologists are talking about when they say the Universe is "expanding". The laws that prohibit faster-than-light travel concern movement within space ("peculiar motion"), not the expansion of space itself.
- xenophonf 11y agoThis might help you understand: "Misconceptions about the Big Bang" http://www.physics.uq.edu.au/download/tamarad/papers/SciAm_BigBang.pdf http://www.physics.uq.edu.au/download/tamarad/papers/SciAm_B...