Crash Course Astronomy: Everything, the Universe...and Life

So. 48 episodes, over eight hours of content, 100,000 words, a year and a half of work, topics ranging from quantum fluctuations to the death of the Universe... and, finally, here we are. The last episode of Crash Course Astronomy. When I put together the syllabus for the show, I found it helped to be flexible as the scripts got written; galaxies got split into two episodes, as did cosmology (at least, dark matter and energy). We had 45 episodes listed for a long time, and I left one slot open J...