title: Obituary: Hans A. Bethe (1906-2005).
authors.affiliation: Kurt Gottfried and Edwin E. Salpeter are in the Department of Physics, Cornell University, Ithaca, New York 14853-5001, USA.e-mail: kg13@cornell.edu.
authors.forename: Kurt
authors.initials: K
authors.lastname: Gottfried
authors.forename: Edwin E
authors.initials: EE
authors.lastname: Salpeter