# Time travel!!!

**URL:** <https://boards.straightdope.com/t/time-travel/536843>\
**Category:** Factual Questions\
**Created:** [April 21, 2010, 11:26am UTC](https://boards.straightdope.com/t/time-travel/536843 "2010-04-21T11:26:48Z")\
**Posts on this page:** 6\
**Page:** 2

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**Author:** ![Fiendish\_Astronaut](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/fiendish_astronaut/32/3295_2.png) [@Fiendish\_Astronaut](https://boards.straightdope.com/u/Fiendish_Astronaut)\
**Post date:** [April 24, 2010, 9:54pm UTC](https://boards.straightdope.com/t/time-travel/536843/21 "2010-04-24T21:54:38Z")

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Since time marches forward at a specific rate, surely it’s deviation from this which would constitute actual time travel. So perhaps, being “frozen” in time could be considered to be time travel to the past. Sorry Martian.

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**Author:** ![MrFloppy](https://avatars.discourse-cdn.com/v4/letter/m/43a26b/32.png) [@MrFloppy](https://boards.straightdope.com/u/MrFloppy)\
**Post date:** [April 24, 2010, 10:14pm UTC](https://boards.straightdope.com/t/time-travel/536843/22 "2010-04-24T22:14:16Z")

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Travelling to the future is possible as has been stated previously. One simply travels very fast and time slows down for that person. When the traveler arrives back on earth, many years have passed compared to a short stint in the space capsule.

The real bitch though is going back in time. From what I understand, time travel is a one way trip.

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**Author:** ![Sapo](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@Sapo](https://boards.straightdope.com/u/Sapo)\
**Post date:** [April 25, 2010, 4:31am UTC](https://boards.straightdope.com/t/time-travel/536843/23 "2010-04-25T04:31:21Z")

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> [@MrFloppy](#):
>
> Travelling to the future is possible as has been stated previously. One simply travels very fast and time slows down for that person. When the traveler arrives back on earth, many years have passed compared to a short stint in the space capsule.
> 
> The real bitch though is going back in time. From what I understand, time travel is a one way trip.

Nah. You just travel very fast but in reverse.

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**Author:** ![ShibbOleth](https://avatars.discourse-cdn.com/v4/letter/s/848f3c/32.png) [@ShibbOleth](https://boards.straightdope.com/u/ShibbOleth)\
**Post date:** [April 25, 2010, 6:32am UTC](https://boards.straightdope.com/t/time-travel/536843/24 "2010-04-25T06:32:25Z")

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I’m requesting that this thread be closed, since we’ve already discussed this many times. I think the most recent thread was in July, 2017, and as you know, Emperor Palin has forbidden public discussion since the incident.

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**Author:** ![Napier](https://avatars.discourse-cdn.com/v4/letter/n/ce73a5/32.png) [@Napier](https://boards.straightdope.com/u/Napier)\
**Post date:** [April 25, 2010, 12:41pm UTC](https://boards.straightdope.com/t/time-travel/536843/25 "2010-04-25T12:41:17Z")

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Right, as if she could follow a time travel discussion…

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**Author:** ![BrightNShiny](https://avatars.discourse-cdn.com/v4/letter/b/7bcc69/32.png) [@BrightNShiny](https://boards.straightdope.com/u/BrightNShiny)\
**Post date:** [April 25, 2010, 8:30pm UTC](https://boards.straightdope.com/t/time-travel/536843/26 "2010-04-25T20:30:25Z")

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The OP may be referring to a time travel scenario involving wormholes. Here’s the [wiki](http://en.wikipedia.org/wiki/Wormhole):

> [@](#):
>
> The theory of general relativity predicts that if traversable wormholes exist, they could allow time travel.[6] This would be accomplished by accelerating one end of the wormhole to a high velocity relative to the other, and then sometime later bringing it back; relativistic time dilation would result in the accelerated wormhole mouth aging less than the stationary one as seen by an external observer, similar to what is seen in the twin paradox. However, time connects differently through the wormhole than outside it, so that synchronized clocks at each mouth will remain synchronized to someone traveling through the wormhole itself, no matter how the mouths move around. This means that anything which entered the accelerated wormhole mouth would exit the stationary one at a point in time prior to its entry.

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