![Christa with her back up Barbara Morgan | Shuttle challenger, Space shuttle challenger, Nasa history Christa with her back up Barbara Morgan | Shuttle challenger, Space shuttle challenger, Nasa history](https://i.pinimg.com/originals/fe/7e/9d/fe7e9dd82de5bba95448e14b69f7935a.png)
Christa with her back up Barbara Morgan | Shuttle challenger, Space shuttle challenger, Nasa history
![Christa McAuliffe and Barbara Morgan, Teacher in space primary and backup crew members for Shuttle Mission STS-51L. This mission ended in failure when the Challenger orbiter exploded 73 seconds after launch on Christa McAuliffe and Barbara Morgan, Teacher in space primary and backup crew members for Shuttle Mission STS-51L. This mission ended in failure when the Challenger orbiter exploded 73 seconds after launch on](https://c8.alamy.com/comp/2CF6YYM/christa-mcauliffe-and-barbara-morgan-teacher-in-space-primary-and-backup-crew-members-for-shuttle-mission-sts-51l-this-mission-ended-in-failure-when-the-challenger-orbiter-exploded-73-seconds-after-launch-on-january-28-1986-2CF6YYM.jpg)
Christa McAuliffe and Barbara Morgan, Teacher in space primary and backup crew members for Shuttle Mission STS-51L. This mission ended in failure when the Challenger orbiter exploded 73 seconds after launch on
![Space shuttle Endeavour astronaut Barbara Morgan approaches the microphone for a news conference after she arrived with other crew members at the space shuttle landing facility at Kennedy Space Center in Cape Space shuttle Endeavour astronaut Barbara Morgan approaches the microphone for a news conference after she arrived with other crew members at the space shuttle landing facility at Kennedy Space Center in Cape](https://c8.alamy.com/comp/2D2103K/space-shuttle-endeavour-astronaut-barbara-morgan-approaches-the-microphone-for-a-news-conference-after-she-arrived-with-other-crew-members-at-the-space-shuttle-landing-facility-at-kennedy-space-center-in-cape-canaveral-florida-august-3-2007-endeavour-is-scheduled-for-launch-on-august-8-on-a-mission-to-the-international-space-station-morgan-was-the-backup-for-astronaut-christa-mcauliffe-who-died-aboard-the-space-shuttle-challenger-explosion-reutersscott-audette-united-states-2D2103K.jpg)