Shuttle program's 100th flight lifts off; Discovery carries a truss for the space station

Nineteen years after the shuttle fleet began flying, NASA finally reached its hundredth mission. On October 11, 2000, Discovery lifted off from Kennedy Space Center carrying the Z1 truss, two Control Moment Gyros, and a docking adapter bound for the International Space Station. Commander Brian Duffy led a seven-member crew, including pilot Pamela Melroy, on a flight that spent a week docked to the station and sent astronauts outside four separate times. It was the shuttle program's hundredth launch and Discovery's twenty-eighth…