This Female Astronaut Just Broke A Major Record In Space

Astronaut Peggy Whitson is no stranger to breaking records. She's already been celebrated as as the first female chief of the astronaut office, the first woman to command the space station (twice!), and the first NASA science officer. Plus, she's completed the most space walks of any female astronaut. At 1:27 a.m. today, Whitson claimed another major record. She has been in space for 534 days and counting, which gives her the most cumulative time spent in space of any NASA...