Limitations of Light Speed and Detecting Black Hole Collisions in the Universe

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SUMMARY

The discussion centers on the limitations imposed by the speed of light in spacetime and the challenges in detecting black hole collisions across vast cosmic distances. It highlights that no known faster-than-light (FTL) particles exist, and any hypothetical FTL signals raise significant causality issues. The conversation emphasizes the current understanding of physics, which restricts our ability to predict or detect events such as black hole collisions or supernovae occurring 200 million light-years away.

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  • Understanding of the speed of light as a cosmic limit
  • Familiarity with black hole physics and their properties
  • Knowledge of causality and its implications in theoretical physics
  • Basic concepts of vacuum radiation and its theoretical emissions
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  • Explore the properties and detection methods of black holes
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Astronomers, physicists, and anyone interested in the fundamental limits of physics and the detection of cosmic events like black hole collisions.

mieral
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Light speed is the maximum speed within spacetime so the universe is limited by the speed of light.. supposed there was a signal that is faster than light.. do they have corresponding radiation that we can detect.. for example.. some black holes in center of galaxies are billions of times the solar mass.. or let's say two black holes collide.. if somehow everything happens at same time in all parts of the universe.. is there a way to detect any black hole collision or even supernova happening say 200 million light years away now on earth? what particular vacuum radiation would they emit (theoretically)?
 
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Hi mieral.

Unfortunately there is simply no way to know what would happen since there are no known FTL particles and the few hypothetical ones cause serious causality concerns (paradoxes and such). We can only answer questions about physics that we currently understand or that are based on our current understanding.

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