Can Black Holes Really Allow Time Travel and Survival Beyond the Event Horizon?

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SUMMARY

The discussion centers on the misconceptions surrounding black holes and time travel, specifically referencing the film 'Interstellar'. It is established that while relativity allows for time dilation, black holes do not enable time travel or survival beyond the event horizon. A sufficiently massive black hole may allow a person to cross the event horizon without immediate destruction, but tidal forces ultimately lead to disintegration. The consensus is that the portrayal of time travel in popular media is not scientifically accurate.

PREREQUISITES
  • Understanding of general relativity and its implications on time and space
  • Knowledge of black hole physics, particularly event horizons and singularities
  • Familiarity with tidal forces and their effects on objects in gravitational fields
  • Awareness of the distinction between scientific theories and their representation in media
NEXT STEPS
  • Research the principles of general relativity and time dilation
  • Study the characteristics of black holes, focusing on event horizons and singularities
  • Explore the effects of tidal forces in strong gravitational fields
  • Examine the differences between scientific fact and fictional portrayals in movies like 'Interstellar'
USEFUL FOR

Astronomers, physicists, science communicators, and anyone interested in the scientific realities of black holes and time travel concepts.

Ali Abbas
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When somebody crosses the horizon of a black hole, the person would have the privilege to travel backwards in time (as shown in the movie 'Interstellar'). What are the possiblities of such a person to even survive after getting in a black hole, and how does he even able to travel in the past. Time travel in the future can definitely be considered due to relativity. Relativity also shows how can time be reversed, but how does a black hole cause time to be reversed? Can somebody explain me please?
 
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Ali Abbas said:
When somebody crosses the horizon of a black hole, the person would have the privilege to travel backwards in time (as shown in the movie 'Interstellar').

No, they wouldn't. Movies are not good references for actual science.

Ali Abbas said:
Relativity also shows how can time be reversed

It does? Please give a reference.

Ali Abbas said:
how does a black hole cause time to be reversed?

It doesn't.
 
Assuming that the radiation environment doesn't fry you, you can survive crossing the event horizon of a sufficiently massive black hole. It's the tidal gravity that rips you apart, and that gets weaker for a larger hole. However, after that, all paths lead to the singularity and you will be shredded at some point.
 

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