I thought this was very nicely done. I was quite surprised to find that there were so many voice actors in this. It didn't seem like there was a need, as there was only one character, that is, the narrator. Of course, I have to give you credit for going the extra mile. It was very interesting to find out all this information. One followed by 90,000 zeroes is more matter than there is in the entire Universe.
I do think this logic might be a bit flawed. It does seem like these things are going to happen inevitably. I was also a bit confused when you were talking about life randomly appearing on Earth. Of course, I don't want to turn this into a theology debate. I really liked this.