Time journey is usually outlined with David Lewis’ definition: An object time travels if and provided that the difference between its departure and arrival occasions as measured within the surrounding world does not equal the period of the journey undergone by the article. For instance, Jane is a time traveler if she travels away from residence in her spaceship for one hour as measured by her own clock on the ship however travels two hours as measured by the clock back dwelling, assuming each clocks are functioning correctly.
Einstein’s neighbor in Princeton, Kurt Gödel, developed one such solution. In 1949, Gödel found that some worldlines in closed spacetime could curve so severely that they curved back onto themselves, forming a loop in spacetime. These loops are known as closed timelike curves (CTCs). If you were an object on a CTC worldline, you would finally arrive on the similar spacetime place … Read more