Talk:Time travel

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replacement for wretched wording and markup[edit]

   A colleague (who didn't take the trouble to encourage constructive discussion by even saving -- for those who care who the colleague is or when they held forth -- the trouble of searching the edit history) did add to Time travel#Tourism in time the following comment markup (to which i've added meta-markup, on this talk page, trying to make the markup display in a more intuitively clear way here):

"This picture would explain why we haven't been over run [sic]
<!-- several people have tried to edit this, but note that it says "over run" rather than "overrun" in the original essay on Hawking's website, and direct quotes should match the original source so please don't change it -->
by tourists from the future."

   The colleague's concern for non-misrepresentation is praiseworthy, even tho the wording "have tried to edit" reeks too much of the Inquisition or the Klan, and the typographic travesty that is their solution may not even be appropriate for some critical edition of Hawking's works. Here -- leaving behind the pedants' concern about who (Hawking, an editor, a typesetter?) is responsible for the inappropriate internal space -- is an encyclopedia-appropriate version of the passage:

"This picture would explain why we haven't been [overrun] by tourists from the future."

It's literate, harmless, almost devoid of distraction, and not significantly better nor worse than

Stephen Hawking says that this picture would explain why our times haven't been overrun by "tourists from the future."{{cn|date=January 2015}}

--Jerzyt 04:21 & 07:05, 3 February 2015 (UTC)

We are all time travellers really![edit]

Hi, I think we are all time travellers. We are all from the 'past' right? as soon as you think, the time has passed. We are also moving forward in time, no one stop! The only thing is, some people may travel a little faster than others such as the people work on the airplane or outer space.

I have now a question if anyone can answer me. Please email me on I am not a physicist, if I swing my arm with speed which is attached to my body, should my arm be present in a different time as my body does? — Preceding unsigned comment added by Sendittomequick (talkcontribs) 21:17, 24 August 2018 (UTC)

I can't talk to your time travel question, but you should be able to just get messages through Wikipedia. It's usually a bad idea to put your email on Wikipedia, but it is not (to the best of my knowledge) against the rules. Nonetheless, I would suggest removing it from your comment.
Second, this space is really to talk about the article Time Travel, not to ask subject matter questions. You would probably be better off finding another forum to ask your question if you really need a response.
Finally, my apologies for deleting this comment originally - I made an error and thought it was the main article (where it would be inappropriate).
--KNHaw (talk) 21:25, 24 August 2018 (UTC)
This is discussed in the article, in the lead, "Forward time travel, outside the usual sense of the perception of time, is an extensively-observed phenomenon and well-understood within the framework of special relativity and general relativity", and more in-depth in the appropriate sections. Bright☀ 10:24, 25 August 2018 (UTC)

What people are calling "forward time travel" is really no such thing. If I get on a spaceship and travel near light speed for a century, I will return to the earth hardly aged at all but everyone on earth will be 100 years gone or older... did I travel forward in time? no. I did not cease to exist in the present moment at any point in my journey... but I was not changing at the normal rate of earthbound changes is all. it may SEEM like I traveled to the future but I just aged slower, not that different from traveling in cryogenic suspension.Jiohdi (talk) 01:55, 25 January 2019 (UTC)

Off-topic here per wp:Talk page guidelines: "Talk pages are for improving the encyclopedia, not for expressing personal opinions on a subject or an editor." - DVdm (talk) 08:55, 25 January 2019 (UTC)

Jiohdi correction of forward time travel does improve the article. It improves it by correcting it. — Preceding unsigned comment added by (talk) 21:53, 12 February 2020 (UTC)

Semi-protected edit request on 12 December 2018[edit]

At the end the first paragraph of "Absence time travelers from the future" where it talks about "a region of spacetime that is warped...", add this sentence: "Kurt Vonnegut explored this idea in his novel "The End of Eternity." 2601:1C0:8100:B4E3:F51E:5AA:C039:5EAF (talk) 20:13, 12 December 2018 (UTC)

I'm sure that most of the concepts in this article have been addressed in science fiction at one time or another. Sci-fi is covered briefly in this article but in far more detail at Time travel in fiction. Is there a reason this story is the exception that is noteworthy for a mention here? ‑‑ElHef (Meep?) 21:24, 12 December 2018 (UTC)
Yes, I think it's better to put it there. That article was specially created for the purpose. - DVdm (talk) 22:02, 12 December 2018 (UTC)

Kurt Vonnegut was not the author of "The End of Eternity". Issac Asimov is. — Preceding unsigned comment added by (talk) 21:48, 12 February 2020 (UTC)

Not sure if "time travel" is possible but time machine(s) do exist apparently[edit]

Those who have them want me to think that particle accelerators are actually time machines. There is even a documentary called "The World's First Time Machine" ( which suggests that they are only able to receive messages from the future using their time machines. I posted about it on the reddit "conspiracy" sub ( and now believe that everyone but me already know about the existence of time machine(s). Might want to update the article with information about real life time machine(s) or mention something like "if they exist, they are classified...". Otherwise even articles labeled "good" like this one - - shouldn't be believed. By the way, I noticed that the article about particle accelerators is not labeled "good" ( ¯\_(ツ)_/¯ — Preceding unsigned comment added by (talk) 05:52, 21 March 2020 (UTC)

Earth's motion and Time Travel[edit]

Hello. I was looking for something on this page that would address the problem of Earth's motion when it comes to time travel. For instance, if I traveled forward or backward in time one minute to my current location, which is a spot currently occupied by the crust of the Earth, I would presumably then be at a point inside the Earth or in outer space because while I have not moved, the Earth has moved. When there is discussion of going back to the far past or far future, I always wonder how travel to that distant location lightyears away from Earth's present position is accomplished. The Earth moves, so you have to get to where the Earth was at or will be if you want to time travel somewhere beside the cold void of space. Maybe time travelers have done it, but they accidentally found themselves in outer space since the Earth moved. Is there anything on this page or in the literature that discusses this locational displacement problem? I would hate to be the one who creates time travel only to accidently time travel to one's present location one minute later, which is now a spot in the Earth's core or in deep space since the Earth has moved. Geographyinitiative (talk) 20:42, 21 June 2020 (UTC)

Well, this is not the place to ask these questions. Here on on the article talk paes, we can only discuss the state of the article, not the subject — see wp:Talk page guidelines. You can ask the question on our wp:Reference desk/Science. Good luck there. - DVdm (talk) 21:00, 21 June 2020 (UTC)
I made a comnent there. I think it is appropriate to discuss here as well. Geographyinitiative (talk) 21:10, 21 June 2020 (UTC)
Here we can only discuss additions, changes and removals to/from the article. The discussion that you have in mind is inappropriate here, as you can see on top of this talk page:
This is the talk page for discussing improvements to the Time travel article.
This is not a forum for general discussion of the article's subject.
Hope this helps. - DVdm (talk) 21:47, 21 June 2020 (UTC)