NASA Astronaut Peggy Whitson Sets Spaceflight Record

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534 days, 2 hours, 49 minutes and counting. NASA astronaut Peggy Whitson flew through the standing record for cumulative time spent in space by a U.S. astronaut at 1:27 a.m. EDT on April 24, 2017, and with the recent extension of her stay at the International Space Station, she has five months to rack up a new one.
Source: NASA Image of the Day
NASA Astronaut Peggy Whitson Sets Spaceflight Record
NASA Image of the Day