Indeed, there's no link. But I believe it's the first chapter of his book:
http://www.amazon.com/Nemesis-Death-Star-Richard-Muller/dp/1...
His website looks rather messy, but as a 65 years old astronomy professor I guess he has other stuff in his mind...
That book still remains one of the best books I have ever read. Completely hooked all the way through.
Nicely paced, "fun" but also well reasoned.
The fact that a theory that has stood such serious intellectual assault over the years after being invented, essentially, in the spur of an argument has always impressed me.
http://muller.lbl.gov/pages/nemch2.htm is a 404.
Ah: http://muller.lbl.gov/pages/Nemesis%20Chapters/
A brief reminder: write for the web.