Record-Setting NASA Astronaut Peggy Whitson Retires

Record-Setting NASA Astronaut Peggy Whitson Retires

NASA astronaut Peggy Whitson, who holds the U.S. record for most cumulative time in space, is retiring from the agency, effective Friday.  “Peggy Whitson is a testament to the American spirit,” said NASA Administrator Jim Bridenstine. “Her determination, strength...