Award Forry Award

SFWA Grand Master (1986)

Thomas Alva Edison Foundation Award (1957)

Howard W. Blakeslee Award (1960)

Boston University's Publication Merit Award (1962)

Special Hugo Award for "adding science to science fiction" for essays published in the Magazine of Fantasy and Science Fiction (1963)

James T. Grady-James H. Stack Award for Interpreting Chemistry (1965)

Westinghouse Science Writing Award (1967)

SF Hall Of Fame (1997)

E.E. Smith Memorial Award for Imaginative Fiction (1967)

Asteroid Namesake (5020)

Fictionwise eBook Author of the Year ( [2004])

The Isaac Asimov School for Science and Literature (Brooklyn ∙ New York)

Pantheon for Skeptics

Sigma Xi

American Academy of Arts and Sciences (Fellow, 1963)

New York State Writers Hall of Fame (2015)

Science Fiction and Fantasy Hall of Fame (1997)

Klumpke-Roberts Award (1975)

Humanist of the Year (1984)

First Fandom Hall of Fame Award (2008)

American Security Council Bronze Medal (1964)

John W. Campbell Award (1973)

Inkpot Award (1979)

Prometheus Hall of Fame Award (1991)

Robert A. Heinlein Society Award (2005)

Hubbard Writers/Illustrators of the Future (Lifetime Achievement, 2006)

Robert A. Heinlein Memorial Award (2016)

Phoenix Award (2010)

Guest of Honour, Eastercon, UK (2009)

John W. Campbell Award (1974)

Locus Award (Best Critic, 1976)

E.E. Smith Memorial Award for Imaginative Fiction (1977)

Pat Terry Memorial Award for Humorous Writing (1977)

Robert A. Heinlein Award (2008)

Inkpot Award (2001)