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Learn exactly how Einstein's theory of relativity works, and discover how there's nothing in science that says time travel is impossible.
The Short Answer: Although humans can't hop into a time machine and go back in time, we do know that clocks on airplanes and satellites travel at a different speed than those on Earth. We all travel in time! We travel one year in time between birthdays, for example.
The ability to jump forward and backwards in time has long fascinated science fiction writers and physicists alike. So is it really possible to travel into the past and the future?
Time travel is the hypothetical activity of traveling into the past or future. Time travel is a widely recognized concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a hypothetical device known as a time machine.
1. Time travel via speed. This is the easiest and most practical way to time travel into the far future – go really fast. According to Einstein’s theory of special relativity, when you...
Adi Foord explains how wormholes, relativity, telescopes, and more play into the potential for time travel in this Curious Kids piece.
Time travel is the concept of moving between different points in time, just like you move between different places. In movies, you might have seen characters using special machines, magical...
Time traveling to the near future is easy: you’re doing it right now at a rate of one second per second, and physicists say that rate can change. According to Einstein’s special theory...
Scientists are trying to figure out if time travel is even theoretically possible. If it is, it looks like it would take a whole lot more knowledge and resources than humans have now to do it.
Science says time travel is possible. Here, we explore some of the theories behind time travel and the science that supports time-bending.