NASA Introduces Astronauts Of Upcoming Shuttle Mission

HOUSTON, TX - JULY 11: NASA astronaut-educator Barbara Morgan (L) looks on as Jennifer Hass, 17, of San Antonio (R) explains the workings of a rover model she helped build as part of a space camp program during an educational presentation to school children July 11, 2007 at Johnson Space Center in Houston. Morgan, who left her classroom teaching duties in Idaho to join NASA's astronaut corps in 1998, will serve as a robot arm operator aboard Endeavour as well as supervise the transfer of supplies delivered to the space station. (Photo by Dave Einsel/Getty Images)