What is the name for the "stuff" at heart of black hole?

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SUMMARY

The core of a black hole is referred to as a "singularity," which denotes a point where current mathematical models fail to provide a coherent understanding of the underlying physics. This term encapsulates the unknown nature of the matter or energy present at this point, as existing theories yield unphysical results. The scientific community anticipates that advancements in quantum gravity theory may eventually clarify the properties of singularities.

PREREQUISITES
  • Understanding of general relativity and its implications for black holes
  • Familiarity with the concept of singularities in physics
  • Basic knowledge of quantum mechanics
  • Awareness of current theories in quantum gravity
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  • Research the implications of general relativity on black hole formation
  • Study the concept of singularities in advanced physics literature
  • Explore current developments in quantum gravity theories
  • Investigate the mathematical models that describe black holes and their limitations
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Astronomers, physicists, and students of theoretical physics interested in the fundamental nature of black holes and the ongoing quest to understand singularities.

Cindy Hops
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What is the name for the "stuff" (neither matter nor neutrons) at the heart of a black hole?
 
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The reason that the heart of a black hole is called a "singularity" is because the word singularity is just shorthand for "the place where the math model breaks down and we don't know WHAT is/was going on". In other words, it is unknown just what is at the heart of a black hole since the math gives unphysical results. The hope/belief is that if/when we get a solid theory of quantum gravity we might get an answer to that question.
 
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Wonderful answer! This explains why I could not find it anywhere else. Thanks!
 

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