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I was reading an article about the misconceptions in cosmological horizons and I wanted to clarify an idea.
https://arxiv.org/abs/astro-ph/0310808
In cosmological perspective, is there a global inertial reference frame (maybe CMB) ? Or all inertial frames are defined locally and there is no global inertial one ?
Is this is the one of the reasons why observing superluminal objects does not violate SR ?
https://arxiv.org/abs/astro-ph/0310808
In cosmological perspective, is there a global inertial reference frame (maybe CMB) ? Or all inertial frames are defined locally and there is no global inertial one ?
Is this is the one of the reasons why observing superluminal objects does not violate SR ?