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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for U.S. astronaut.:

NASA: U.S. astronauts' org.
GLENN: U.S. astronaut.
GLENN: First U.S. astronaut to circle the earth
CARPENTER: U.S. astronaut.
NASA: U.S. astronaut's insignia
ALDRIN: U.S. astronaut Buzz
NASA: Astronaut's insignia, in the U.S.