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At the end of this, Kelly will have a total of 522 days in space (adding on a day for accumlated hours spent), which will beat out Mike Fincke's total record of 382 days in space. Because he's been on a Hubble servicing mission, Kelly has also flown higher than a majority of astronauts since the Apollo era ended.
A grandfather of three is poised to blast into space and the record books on Friday, becoming the American astronaut who has spent the longest time in space, NASA said. Jeff Williams, 58, is the first American to make three long-duration flights to orbit, and will break a US record set by astronaut Scott Kelly earlier this year. By the end of his half-year mission at the orbiting International Space Station, Williams will become the American with the most cumulative days in spaceâ534, NASA said.