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The astronaut who was to have been the first African-American woman to work aboard the International Space Station has been removed from her mission, and NASA is not saying why. NASA said in a news release that Serena Auñón-Chancellor, who previously was assigned to Expedition 58/59, has been reassigned to the Expedition 56/57 crew, launching in June. She is taking the place of astronaut Jeanette Epps, who returns to NASA’s Johnson Space Center in Houston to assume duties in the Astronaut Office and be considered for assignment to future missions. Flight testing is underway on the latest variant of the Merlin PSA (Personal Sport Aircraft) In Lakeland, FL. The airplane