Tag «vlogbrothers»

Obamanation: Crash Course US History #47

Obamanation: Crash Course US History #47

Hi, I’m John Green, this is CrashCourse U.S. history and we’ve finally done it, we’ve reached the end of history! Ahh. Stan, says that history never ends but whatever we’ve reached the part that Me From the Present is in. So we aren’t going to cover the astonishing results of the 2016 presidential election. What …

The New Astronomy: Crash Course History of Science #13

The New Astronomy: Crash Course History of Science #13

Heliocentrism was central to revolution in European astronomy. We’ll follow this idea to its conclusion with Galileo. But before we get there, there are two critical links between Copernicus and Galileo. This is the story of Tycho Brahe and Johannes Kepler… and a violent math duel. [INTRO MUSIC PLAYS] There are a lot of quirky …