Time Travel: Can Humans Go Faster Than Ordinary Speed?

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Discussion Overview

The discussion centers on the feasibility of humans traveling forward in time at speeds exceeding ordinary rates, particularly in the context of relativistic effects and time dilation. Participants explore theoretical and practical implications of high-speed travel, including the survivability of humans at such speeds and the measurable effects of time dilation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that traveling at speeds close to the speed of light could allow for significant time jumps into the future, as described by relativity.
  • Others point out that while time dilation can be measured at current speeds, the effects are negligible for human travel, with only milliseconds of difference observed.
  • Concerns are raised about the survivability of humans at high speeds, particularly regarding acceleration and hazards from the interstellar medium and cosmic microwave background (CMB) radiation.
  • One participant proposes that if the goal is simply to wake up in the future, investing in hibernation research may be a more efficient approach than relativistic space travel.
  • There is a discussion about the potential health risks associated with high speeds, specifically how CMB radiation could become lethal if blue-shifted to X-rays due to relative motion.

Areas of Agreement / Disagreement

Participants express differing views on the practicality of time travel at high speeds, with some emphasizing the current limitations and others exploring theoretical possibilities. No consensus is reached regarding the feasibility of human time travel at extraordinary speeds.

Contextual Notes

Limitations include unresolved questions about the specific speeds required for significant time dilation and the health implications of traveling at such speeds. The discussion also reflects varying interpretations of the implications of relativity.

Jupiter60
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TL;DR
Forward time travel.
Will humans ever be able to travel forward in time faster than the ordinary speed?

According to relativity if someone were traveling at speeds close to the speed of light they would jump some years into the future. The question however is will this ever be possible? Can humans survive at such high speeds?
 
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The effect happens at any speed, and has been measurable at airline speeds since the 1970s at least. If you want it to be detected to unaided humans, it won't happen any time soon. The fuel requirements are incredible.
 
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Jupiter60 said:
TL;DR Summary: Forward time travel.

Can humans survive at such high speeds?
Speed is not a problem, acceleration is however...
 
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malawi_glenn said:
Speed is not a problem, acceleration is however...
Well, at sufficiently high speeds relative to the galaxy at large the interstellar medium and the CMB are health hazards.
 
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Jupiter60 said:
TL;DR Summary: Forward time travel.

Will humans ever be able to travel forward in time faster than the ordinary speed?

According to relativity if someone were traveling at speeds close to the speed of light they would jump some years into the future. The question however is will this ever be possible? Can humans survive at such high speeds?
I think that first we need to clarify how high a speed you are thinking of. We can already travel at speeds where time dilation is measurable. So how much time dilation are you looking for? Perhaps a time dilation factor of ##1+2/70\approx 1.03##. That would give two additional years over a 70 year lifespan. Is that what you were thinking?
 
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Yes, time dilation can be measured with current speed. However, humans can't travel into the future any more than a few milliseconds faster with current speeds. With current speeds the affects of time dilation are negligible.
 
Jupiter60 said:
With current speeds the affects of time dilation are negligible.
So what speeds are you thinking of?
 
Jupiter60 said:
Yes, time dilation can be measured with current speed. However, humans can't travel into the future any more than a few milliseconds faster with current speeds. With current speeds the affects of time dilation are negligible.
If all you're looking to do it wake up far in the future, it could be achieved a lot easer and sooner by pulling your money out of space ship / space travel research and putting it into hibernation research.

Seriously, relativistic space travel is an incredibly inefficient way of travelling into the future.
 
Ibix said:
Well, at sufficiently high speeds relative to the galaxy at large the interstellar medium and the CMB are health hazards.
Why does CMB become a health hazard?
 
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Frabjous said:
Why does CMB become a health hazard?
With a sufficiently large motion relative to CMB, even that microwave radiation can blue-shift to lethal X-rays.
 
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