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Physicists develop model for a real-life TARDIS

Posted on Sunday, 26 August, 2018 | Comment icon 14 comments

Is it really possible to build a time machine ? Image Credit: CC BY 2.0 aussiegall
Two scientists from Canada and the US have come up with a mathematical model for a viable time machine.
The idea of traveling backwards and forwards through time has captured the imagination of the general public for centuries, but now two physicists believe that they may have found a way to construct a real-life time machine, albeit with materials that don't actually exist yet.

Theoretical physicist and mathematician Ben Tippett from the University of British Columbia and astrophysicist David Tsang from the University of Maryland maintain that the key to time travel lies in using the curvature of space-time to bend time in to a circle that can be directly traversed.

"People think of time travel as something as fiction. And we tend to think it's not possible because we don't actually do it," said Tippett. "But, mathematically, it is possible."

They call their model Traversable Acausal Retrograde Domain in Space-time (TARDIS) - the same acronym as the blue police telephone box in British science fiction series Doctor Who.

"My model of a time machine uses the curved space-time to bend time into a circle for the passengers, not in a straight line," said Tippett. "That circle takes us back in time."

Actually creating a machine that can take advantage of this idea however is another matter entirely.

"While is it mathematically feasible, it is not yet possible to build a space-time machine because we need materials - which we call exotic matter - to bend space-time in these impossible ways, but they have yet to be discovered," said Tippett.

Source: Science Alert | Comments (14)

Tags: Time Machine, TARDIS

Recent comments on this story
Comment icon #5 Posted by Ozymandias on 27 August, 2018, 7:39
 but don't bother. As soon as you read the last sentence you realise you've been wasting your time. 
Comment icon #6 Posted by pallidin on 27 August, 2018, 8:51
I have an "on-demand" Time Machine that I use as necessary to alter past events. For example, my wife say's: "Where have you been, and WHAT have you been doing?????" Spontaneously my recent past is altered...  
Comment icon #7 Posted by freetoroam on 27 August, 2018, 8:58
So as the title should say Physicists develop model for a  TARDIS But you can already buy them at any good toy shop, Hamleys do them.
Comment icon #8 Posted by spartan max2 on 27 August, 2018, 12:11
Oh I thought that they meant the "it's bigger on the inside" aspect of the tardis haha
Comment icon #9 Posted by TripGun on 27 August, 2018, 13:43
Time travel is a lot of fun, it's just a pain to keep having to kill the early version of yourself.
Comment icon #10 Posted by pallidin on 27 August, 2018, 15:01
I've heard of this so-called "exotic matter" elsewhere. Wonder what qualifies for "exotic"
Comment icon #11 Posted by Why not on 27 August, 2018, 19:56
I think if there ever really is a time we can travel forward and backward in time, it won't be anything like this. As in taking your physical self forward or back, but it will be your consciousness traveling. Don't ask me how though.
Comment icon #12 Posted by DanL on 4 September, 2018, 4:30
In order to make a time travel machine we need to explore the possibility that there is some difference between objects when they were THEN and what they are NOW. There is a possibility that if there is a difference then by adjusting that difference we might be able to move things from now to then simply by changing that difference. It is possible that this “difference” might be in the realm of dark matter or dark energy, neither of which we can find and measure at this time. We can only infer their existence by the anomalous things that we can observe that can not be explained by normal curre... [More]
Comment icon #13 Posted by Occams Razor on 5 September, 2018, 4:37
It will be easy to tell if someone really builds a time machine... it will be the guy that wins lotto every week.
Comment icon #14 Posted by DanL on 20 September, 2018, 4:03
I think that travel into the future would be a lot harder and less precise than travel into the past. There might also be the problem of returning to your original time/place because I suspect that time travel may also involve movement into near by parallel universes. The big things might match up but something as small in the over all stream as a single lotto number might not track true. 

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