(Radio Iowa) –  For the fourth time in her record-setting career, Iowa-born astronaut Peggy Whitson is now onboard the International Space Station, this time as the first female commander of a private space mission. During a question-and-answer session with Texas elementary schoolers, Whitson urged the students to challenge themselves to do things they don’t know how to do, saying, “if you fail at something, you learn something from it and you’ll be better the next time.”

The 63-year-old from Beaconsfield talked with the kids about the wide array of scientific experiments they’re conducting, as well as changes she’s noticing about the orbiting station, and how easy it is to adapt to microgravity.

Prior to this mission, Whitson held the record for spending a total of 665 days in space, more than any other U.S. astronaut, and she’s adding to the total on this 12-day trip. She and her three crewmates are scheduled to return home next week.