Time machines do not exist. We all know that. But what few people know is that you can travel through time. Albert Einstein discovered this about 100 years ago. He found out that it is possible to travel to the future. Well, sort of.
Yannick Fritschy explains how the first clocks worked and why we have years, hours and seconds; how Galileo discovered that the earth rotates and why we do not fall off it; how Einstein turned all ideas about time and space completely upside down and how you can travel through time. Why does time travel at different
speeds in different places? And what do black holes have to do with that?
In this book, you will find out what an extraordinary thing time is, very different from what most people think. You will do experiments with your own thoughts. Because that is the great thing about time and time travel: you can learn a lot about it just by using your imagination!