Christa McAuliffe probable the O-rings had not provided a proper seal. Barbara Radding Morgan, her backup, became a professional astronaut in January 1998, and flew on Space Shuttle mission STS-118, to the International Space Station, on August 8, 2007, aboard "Endeavour", the orbiter that replaced "Challenger". McAuliffe was buried at Blossom Hill Cemetery in her hometown, Concord. She has since been honored at many events, including the Daytona 500 NASCAR race in 1986. The McAuliffe-Shepard Discovery Center in Concord and the Christa Corrigan McAuliffe Center for Education and Teaching Excellence at Framingham State University are named in her memory, as are the
Ellison Onizuka that took off from Kennedy Space Center at 11:38:00 EST (16:38:00 UTC) on January 28, 1986. The other "Challenger" crew members were commander Dick Scobee, pilot Michael J. Smith, mission specialists Ronald McNair, Judith Resnik, and payload specialists Gregory Jarvis and Christa McAuliffe. It was destroyed when a flame jet leaking from a solid rocket booster ruptured the liquid hydrogen fuel tank 73 seconds after launch. All seven crew members were killed. Following the "Challenger" disaster, examination of the recovered vehicle cockpit revealed that three of the crew members Personal Egress Air Packs were activated: those of Onizuka, mission specialist