It seems to me, and so I'm really just checking to see if I understand it all correctly, that there are four phenomena in nature that are indistinguishable from one another: (1) crossing beyond an observer's cosmic horizon, (2) crossing the event horizon of a black hole, (3) accelerating toward and nearly reaching the speed of light, and (4) approaching and nearly reaching zero degrees Kelvin. In all four cases, an observer in an inertial frame of reference would see you redshift into invisibility ( I say "you" as if "you're" the one accelerating beyond the observer's cosmic horizon, or the black hole's event horizon, etc). I'm just starting to wrap my head around these concepts, so I'm just checking to see if I understand these four phenomena correctly by (a) venturing a hypothesis; i.e., these phenomena are as indistinguishable from one another as gravity is from acceleration, and I'm (b) testing that hypothesis; i.e., I'm asking y'all if it's true.(adsbygoogle = window.adsbygoogle || []).push({});

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# Four Indistinguishable Phenomena?

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