1917 - 2008
British science fiction writer and inventor, and futurist. He is famous for his short stories and novels, including 2001: A Space Odyssey (1968), and as a host and commentator in the British television series Mysterious World.
1919 - 2005
Anglo-Austrian mathematician and cosmologist. He is best known for developing the steady-state theory of the universe with Fred Hoyle and Thomas Gold as an alternative to the Big Bang theory, but his most lasting legacy will probably be his important contributions to the theory of general relativity. His parents were Jewish, but he never "felt the need for religion" and was a lifelong humanist. He was president of the British Humanist Association from 1982 to 1999.