Peggy Whitson breaks US record for most time spent in space

Astronaut Peggy Whitson on Monday broke the record for most cumulative days spent in space by an American astronaut, surpassing Jeff Williams' record of 534 days, NASA announced. Following this, Whitson tweeted, "It is one of those rides that you hope never ends." She recently completed her eighth spacewalk, breaking Sunita Williams' record for the most spacewalks by a woman.