Ride worked for two years at Stanford University's Center for International Security and Arms Control, then at the University of California, San Diego, primarily researching nonlinear optics and Thomson scattering. She served on the committees that investigated the "Challenger" and "Columbia" Space Shuttle disasters, the only person to participate in both. Having been married to astronaut Steven Hawley during her spaceflight years and in a private, long-term relationship with former Women's Tennis Association player Tam O'Shaughnessy in her years after, she is the earliest space traveler to have been recognized as LGBT. Ride died of pancreatic cancer on July 23, 2012.