Four Horsemen (NASA), senior scientists and consultants to NASA during the Apollo program: Bob Walker,
Jim Arnold, Paul Werner Gast, and Gerry Wasserburg
The Four Horsemen (discussion), a round table discussion by Richard Dawkins, Daniel C. Dennett, Sam Harris, and Christopher Hitchens
This
disambiguation page lists articles associated with the title Four Horsemen of the Apocalypse. If an
internal link led you here, you may wish to change the link to point directly to the intended article.