On June 18, 1983, NASA astronaut Sally Ride made history as the first American woman in space aboard the Space Shuttle Challenger. National Geographic is marking the occasion with a new documentary on the astronaut's life: Sally. In addition to revisiting her storied career, the film provides an unprecedented look at the famously private Ride's personal life—notably her nearly 30-year relationship with another woman.

Director Cristina Costantini's prior work includes the 2018 Emmy-nominated National Geographic documentary Science Fair, chronicling nine teenagers' paths to competing in the Intel International Science and Engineering Fair. So perhaps it's not surprising that Costantini is a longtime fan of Ride since childhood. "It was just, if a girl can go to space and do all these things that women aren't supposed to do, maybe I can do big things, too," she told Ars. "I think a lot of women have the exact same reaction. If she can do it, we can do it. As I got older and I learned more about Sally, I realized, wow, she really had a very fine line to walk and she did it so masterfully."