NASA's record-breaking astronaut, Peggy Whitson, is retiring; has spent more time off the planet than any other American.
NASA's record-breaking astronaut, Peggy Whitson, is retiring; has spent more time off the planet than any other American.
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NASA's record-breaking spacewoman retires as astronaut
NASA's record-breaking astronaut, Peggy Whitson, is retiring; has spent more time off the planet than any other American.
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