宇航员会老得更慢吗？有限的宇宙可以没有边界吗？时间穿越是可能的吗？时间有起点吗？现代科学出人意料地对以上问题给出了肯定的答复。本课程对以上问题及相关问题提供了易于理解的解答。学生有机会接触到爱因斯坦的相对论，并运用相对论的知识分析哲学问题，及其形而上学的和实用的含义。没有自然科学背景但对现代科学以及物理哲学感兴趣的学生可以选择本课程。

Do astronauts age more slowly? Can a finite universe have no edge? Is time travel possible? Can time have a beginning? Surprisingly, modern science answers yes to all these questions. This course provides simple-to-understand explanations of these and other related questions. Students will have the opportunity to engage with Einstein's theories of relativity, to use them to analyze philosophical problems, metaphysical and practical implications. What is the nature of spacetime? What is a four-dimentional world? Is the passage of time a mere illusion? The course is suitable for students with no science background but with an interest in the world of modern science and philosophy of physics.