According to a team of scientists, there is no mathematical reason why travel to a different time is impossible. The only problem is our limit is engineering. In a recent research paper titled “Traversable acausal retrograde domains in spacetime”, or TARDIS for short, scientists show how a machine could control the spacetime continuum to travel backwards through time.
According to many scientists, this particular paper was much needed for further steps towards achieving time travel.
In the paper, issued in the journal Classical and Quantum Gravity, the researchers from the University of British Columbia and the University of Maryland wrote: “In this paper we present geometry which has been designed to fit a layperson’s description of a ‘time machine’. It is a box which allows those within it to travel backwards and forwards through time and space, as interpreted by an external observer.”
Researcher Ben Tippett said: “People think of time travel as something fictional and we tend to think it’s not possible because we don’t actually do it. But, mathematically, it is possible.”
Strong gravitational forces – such as black holes – may be the key to time travel as research has shown that intense gravity can slow down the passage of time.
As a result, a strong force could disrupt spacetime and “bend time into a circle for passengers” providing the traveller is exceeding the speed of light.
However, while time travelling is possible, Mr Tippett believes that no one will be able to build a machine capable of doing it in any time soon.
He added: “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.”
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