Trump talks about Mars mission on call with record-breaking astronaut

U.S. astronaut 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.Whitson, 57, turned a zero-gravity summersault during the video call from the International Space Station, where she serves as station commander."What an amazing thing you've done," said Trump, speaking from the Oval Office on his first call with an astronaut serving aboard the $100 billion orbital ou