Why does time pass more slowly when you travel fast? Do speeding objects really get shorter and heavier? How can you reach a star which is four lights years away in only three years? Is space really curved? In this brilliant little book, illustrated with numerous worked examples and helpful original diagrams, physicist Oliver Linton reveals the truly astonishing nature of the spacetime continuum we all inhabit. If you have ever wanted to think like Einstein, this is the book for you.