用愛因斯坦的相對論告訴你如何“穿越時空”！

人到底有沒有可能穿越時空呢？
你知道嗎，你的“現在”和我的“現在”可能是兩個完全不同的概念！
其實“穿越時空”的事情每天都在發生！
這到底是怎麼回事呢？
愛因斯坦的相對論告訴你答案！
Is it even possible to travel through time?
your "Now" and my "now" might be two very different things!
In fact, the things that travel through time and space are happening every day! What the Hell is going on here?
Einstein's theory of relativity tells you the answer!