There's no point writing another blog post about this, because I covered pretty much everything recently anyway. I updated the previous post to include the major new sequence : the hydrogen sky itself. This is what the sky would look like if we could see neutral hydrogen instead of all those stupid stars, and it's one of my favourites. Honestly, sometimes I think people who don't study neutral hydrogen must have some sort of serious mental problem. What a bunch of losers.
Without further ado, for that weird particular subset of people who only follow the blog but not my Google+ or YouTube channel... come on people, get with the program ! But anyway here's the video. The soundtrack is a bit gloomy, but it has the redeeming feature of making the narration sound tremendously melodramatic. And don't forget to watch The Hydrogen Universe too.