What Happens When You Cross a Black Hole's Event Horizon?

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SUMMARY

This discussion centers on the paradoxes surrounding the event horizon of black holes, specifically addressing three key statements: (1) an observer crossing the event horizon experiences nothing special and does so in finite proper time; (2) an external observer never sees the crossing occur, as it takes infinite time; and (3) an external observer witnesses the black hole's evaporation due to Hawking radiation in finite time. The consensus is that while the external observer perceives the black hole evaporating, the infalling observer does not experience this event and crosses the horizon without awareness of the black hole's fate. The complexities of time dilation and the nature of light escaping the black hole are also discussed.

PREREQUISITES
  • Understanding of general relativity and black hole physics
  • Familiarity with Hawking radiation and its implications
  • Knowledge of time dilation effects near massive objects
  • Basic grasp of thermodynamics as it relates to black holes
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  • Explore the implications of Hawking radiation on black hole thermodynamics
  • Study the effects of gravitational time dilation on observers near black holes
  • Investigate the concept of black hole evaporation and its theoretical frameworks
  • Learn about the latest theories on the nature of singularities and black hole remnants
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Astronomers, physicists, and anyone interested in advanced astrophysics, particularly those studying black hole mechanics and the implications of general relativity.

  • #31
I've been reading these postings, just trying to get a grip on black holes. I am pretty new to this. Something that I have been wondering about... If space traveller A moves directly toward a black hole, into an ever-increasing spacetime compression (while spacetime seeming to decompress as traveller A compresses), would the perceived remaining distance to the black hole decrease at an ever slowing rate, making the trip to the black hole seem endless? From an outside observer, would traveller A seem to assume a spiral path to the black hole, due to spacetime twisting, even though traveller A is moving directly toward it? Also, could it be possible that black holes are actually extremely large (in size, possibly larger than entire galaxies) but distort our perception of themselves by pulling in the space around themselves to a "virtual" singularity. Sorry, don't mean to interrupt a previous discussion, but it seemed liked you guys might have some input. Thanks!
 

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