Will the Universe Expand Forever? Crash Course Astronomy Episode 43: Dark Energy

One of my favorite things to do as a science communicator is melt peoples' brains*. There isn't a better playing field for that than cosmology, the study of the origin, structure, and fate of the Universe itself. Last week's episode of Crash Course Astronomy was an introduction to the Big Bang model of the origin of the Universe. In next week's episode we'll dive into the details of that, exploring the first few fractions of a second of the existence of everything. But this week's episode looks ...