Have you ever wondered about time travel? High school senior Ryan Chester has. Chester made a short video explaining Albert Einstein’s Theory of Relativity and how it affects time. Einstein’s theory is very important to science. Many people think it is very complicated. But Chester explains it in a way that is easy to understand. His video shows how traveling at a very fast speed would cause people to age more slowly than they would on earth. Chester’s video won the Breakthrough Junior Challenge. Mark Zuckerberg, the founder of Facebook, started this new prize for scientists this year.