Movies, books and TV shows often portray characters travelling through time. But what about doing it for real? Minute Physics has put together this short primer on six ways to travel through time, and the first few aren't even very hard.
For instance: the first type of time travel explained in the video involves doing... Nothing. Of course, you may not be too impressed with the results:
"You're already travelling through time," the narrator says. "I mean here you are, 15 seconds since the start of this video."
But luckily, the people behind the clip go a lot further than just telling you to sit there. As the video goes on, the ideas get much more theoretical, and cooler. Number four on the list involves spinning the entire universe. To see the rest, you'll have to watch the clip. Spoiler alert: the ending takes place in the future.