U.S. President Donald Trump and his daughter Ivanka hold a video conference call with Commander Peggy Whitson and Flight Engineer Jack Fischer of NASA on the International Space Station from the Oval Office of the White House in Washington, U.S., April 24, 2017. Peggy Whitson broke the 534-day U.S. record for cumulative time in space on Monday and marked the occasion by speaking with President Donald Trump about plans for human trips to Mars. (Photo/Agencies)
