In this Jan. 13, 2017, file photo made available by NASA, astronaut Peggy Whitson, center, floats inside the Quest airlock of the International Space Station with Thomas Pesquet, left, and Shane Kimbrough before their spacewalk. Early Monday, April 24, 2017, the International Space Station commander surpassed the 534-day, two-hour-and-48-minute record set last year by Jeffrey Williams for most accumulated time in orbit by an American. Whitson already was the world’s most experienced spacewoman and female spacewalker and, at age 57, the oldest woman ever in space. (NASA via AP, File)