We look back on our time with Joel McHale, Dr. Ellen Stofan, Tariq Trotter, and Phillpa Soo. Plus we share more of our time with Dulcé Sloan from our live performace in Philadelphia last August.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy

NASA astronauts Christina Koch and Jessica Meir completed the first all-female spacewalk last week. The historic moment came 35 years after Kathryn Sullivan became the first American woman to spacewalk. We hear from Koch, Meir, and Sullivan. And former NASA chief scientist Ellen Stofan tells us why she says this moment is long overdue. Follow host Maddie Sofia on Twitter @maddie_sofia. Email the show at shortwave@npr.org.Learn more about sponsor message choices: podcastchoices.com/adchoicesNPR Privacy Policy