The Nemesis Affair:
A Story of the Death of Dinosaurs
and the Ways of Science
by David M. Raup
1st ed paperbackExtinction:
Bad Genes or Bad Luck?
by David M. Raup
hardcover
import paperback
The Nemesis idea came about from the combination of apparent periodicity of mass extinctions and the Alvarez model. David Raup was one of the early participants, and has a couple of books about Nemesis and mass extinction. Richard Muller here:
http://www.freerepublic.com/focus/news/1962278/posts?page=46#46
The Nemesis Affair:
A Story of the Death of Dinosaurs
and the Ways of Science
by David M. Raup
1st ed paperbackExtinction:
Bad Genes or Bad Luck?
by David M. Raup
hardcover
import paperback
interesting stuff- the orginal conversation doc seems to have disappeared
As for periodicity- at least one of the sources I’ve been reading speculates that when “planet X” ( or whatever) passes through our solar system, it pulls asteroids and comets in with it, and the earth is then buffeted for a period of years by the junk- about 7 years of “tribulation”? Possibilities of follow on collisions
