Crash Course Astronomy: A Brief History of the Universe 

I love playing hashtag games on Twitter. Someone gives a topic, makes it a hashtag, and then others come up with something that fits. Usually they're funny (the TV show @Midnight does a hashtag war every weeknight, and I won once!), but they can be poignant, too. In October 2012, someone started the hashtag #FiveWordStories. I came up with two; one was a very short horror story, and the other was this one: I was pleased with that. After all, it's true! But if you want details, well then, you'll ...