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Yvonne Darlene Cagle is an African American NASA astronaut.Yvonne Cagle was a member of the Astronaut Class of 1996 (NASA Astronaut Group 16). She is currently assigned to Johnson Space Center's Space and Life Sciences Directorate. She has recently been selected reserve crew for Hawai‘i Space Exploration Analog and Simulation (HI-SEAS), which is part of a study for NASA to determine the best way to keep astronauts well nourished during multiple-year missions to Mars or the moon.