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A college student has mathematically proven the physical feasibility of paradox-free time travel. Does this mean we can all go back to 2019?

Donnie Darko, Back to the Future and many others show, moving around in time creates a lot of problems for the fundamental rules of the Universe: if you go back in time and stop your parents from meeting, for instance, how can you possibly exist in order to go back in time in the first place? It's a monumental head-scratcher known as the 'grandfather paradox', but in September last year a physics student Germain Tobar, from the University of Queensland in Australia, said he has worked out how to "square the numbers" to make time travel viable without the paradoxes.

From Covid-19 dropping from space to plausible 'paradox-free time travel' | Wild space theories in 2020 Here are some wild space theories that marked the year of pandemic, 2020: As the novel coronavirus pandemic plunged the world into a crisis, several theories -- related to the origin, sustainability, and effects of the deadly virus -- sprouted. advertisement Where does coronavirus come from? Strange theory suggests from space (Image for representation: AP) It is always scientists versus scientists or a theory against another theory, especially when it comes to space and universe. As the nov...