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(FILES)-- A handout file photo released by Ria Novosti shows (from R) Soviet Communist Party First Secretary Nikita Khrushchev, the first man to travel into space, Yuri Gagarin, Soviet cosmonaut Valery Bykovsky the and first woman to travel to space Soviet Valentina Tereshkova applauding on June 22, 1963 during a rally dedicated to the successful completion of the flight of the Vostok-5 and Vostok-6 spacecrafts. Two years after Yuri Gagarin's historic first manned flight, Tereshkova blasted off in a Vostok-6 spaceship and at the age of 26 became a national heroine. She remains the only woman ever to have made a solo space flight. AFP PHOTO / RIA NOVOSTI 
RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT " AFP PHOTO / RIA NOVOSTI " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS-/AFP/Getty Images
(FILES)-- A handout file photo released by Ria Novosti shows (from R) Soviet Communist Party First Secretary Nikita Khrushchev, the first man to travel into space, Yuri Gagarin, Soviet cosmonaut Valery Bykovsky the and first woman to travel to space Soviet Valentina Tereshkova applauding on June 22, 1963 during a rally dedicated to the successful completion of the flight of the Vostok-5 and Vostok-6 spacecrafts. Two years after Yuri Gagarin's historic first manned flight, Tereshkova blasted off in a Vostok-6 spaceship and at the age of 26 became a national heroine. She remains the only woman ever to have made a solo space flight. AFP PHOTO / RIA NOVOSTI 
RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT " AFP PHOTO / RIA NOVOSTI " - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS-/AFP/Getty Images

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