Can an Observer Safely Enter and Observe the Singularity Inside a Black Hole?

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Discussion Overview

The discussion revolves around the feasibility of an observer entering and observing the singularity inside a black hole, particularly in the context of two black holes approaching each other. Participants explore theoretical scenarios, gravitational effects, and the implications of black hole mergers.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant suggests that an observer could position themselves at a balance point between two approaching black holes to observe the singularity without destruction.
  • Another participant counters that once inside a black hole, the observer would be unable to escape, especially as the black holes merge into a larger one.
  • Concerns are raised about the destructive nature of black holes, with one participant stating that they would disintegrate anything that approaches them, referencing the effects of tidal forces.
  • A participant draws a parallel to a fictional scenario involving neutron stars, proposing that the gravitational effects of two orbiting black holes could theoretically alter their event horizons, potentially allowing for the "rescue" of objects that have crossed the event horizon.
  • Another participant questions the feasibility of rescuing anything that has crossed the event horizon, suggesting that such objects would have already been torn apart by tidal forces.
  • One participant notes that tidal forces decrease with larger black holes, suggesting that a person falling into a sufficiently large black hole might not experience pain until well inside the event horizon, estimating a transition point around 100,000 solar masses.
  • A later reply emphasizes the complexity of understanding light paths within a black hole, indicating that gravity significantly affects light trajectories.

Areas of Agreement / Disagreement

Participants express a range of views, with no consensus on the possibility of safely observing a singularity or the effects of tidal forces. The discussion remains unresolved with competing theories and interpretations.

Contextual Notes

Participants acknowledge the need for extensive calculations and imagination to fully grasp the implications of gravitational effects and light behavior near black holes. Some assumptions about the nature of black holes and their interactions are not fully explored.

davidschmid10
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Why couldn't an observer position himself at the balance point of the gravity between two black holes that are approaching each other, ride the balance point all the way inside the black holes, and thus observe the singularity without being destroyed?
Thanks in advance.
 
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Once inside one of the black hole he couldn't get out. Meanwhile the black holes will merge into one bigger black hole with the observer stuck there.
 
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Black holes rip apart anything that gets close to them. As said by "mathman", the two black holes will merge to form a bigger black hole and will rip you apart at the sub-atomic level. That means htat you will disintegrate.
 
This is a rather interesting idea. It reminds me of the book Dragon's Egg where they used large masses to compensate for the gravity of a neutron star. If you put two black holes in orbit around each other their gravity should cancel out at the center. Also the added gravity should change the shape of the event horizons. 2 black holes of 3 solar masses at a distance of 17720.6 meters from each other would orbit each other in 0.00053 seconds, which would be "only" 105,992,640 m/s.

If there were two black holes in such an orbit wouldn't the event horizons be reduced in the direction facing the center? If it were wouldn't it be then possible to "rescue" things that had gone past the event horizon? Tidal forces would make this practically impossible, but in theory would this work?
 
Well I'd imagine anything that's already passed the event horison would be already have been pulled apart in every direction, so unless you like 'rescuing' atoms..
 
Blenton said:
Well I'd imagine anything that's already passed the event horison would be already have been pulled apart in every direction, so unless you like 'rescuing' atoms..

No, this isn't always true. Tidal forces decrease as the size of a black hole increases, so a person who falls inside a large enough black hole, like at the centre of the galaxy, would not even feel pain (from tidal forces) until well inside the event horizon.

According to a quick calculation that I just did (done so quickly that it could be wrong), the transition point (for pain) is about 100,000 solar masses.
 
Even though we kept a spot steady inside BH, we still need a lot of calculation and imagination to process the info, because the light paths are seriously affected by gravity and most lights may head toward the center of BH.
 

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