Clarke with his mother, Nora (left), and Aunt Nellie at Clarke's birthplace in Minehead, on Oct. 1, 1970

Clarke with Apollo 11 Neil Armstrong, first human on the moon, June 1970

With astronaut Neil Armstrong on Clarke's holiday greeting card,1970

With CBS anchor Walter Cronkite (left) and Mercury astronaut Wally Shirra (center) during Apollo 15 coverage, August 1971

A postcard sent by Clarke in 1971 from New York City

Clarke at typewriter at home in Sri Lanka, 1970s

With Glen Olds (left) and Buckminster Fuller (center) at the Design Science Institute, New York 1973

Feeding a dolphin in Queensland, Australia, March 16, 1974

Clarke (right) shows off the satellite dish presented to him in 1976 by the Indian government

Visiting Stanley and Christiane Kubrick, April 19, 1976, eight years after "2001."

With Kathy Keeton, founder of Omni, after winning the Science Fiction Achievement Award for "The Fountains of Paradise," 1979