Photo de stock - Two payload specialists in training for the STS-51L mission, and a payload specialist from STS-61C share a ""zero-gravity"" flight aboard a KC-135 aircraft over the Gulf of Mexico on November 20, 1985. Left to right are United States Representative Bill Nelson (Democrat of Florida), Sharon Christa McAuliffe, and Barbara R. Morgan. The congressman is a payload specialist for the STS-61C mission. McAuliffe is the prime payload specialist for the Teacher-in-Space Project aboard the STS-51L mission; and Morgan is her backup. .Mandatory Credit: Keith Meyers/New York Times/NASA via CNP. .EDITOR'S NOTES: Sharon Christa McAuliffe and the other STS-51L prime crew members, lost their lives in the space shuttle Challenger accident moments after launch from the Kennedy Space Center on January 28, 1986...Barbara R. Morgan flew on STS-118, an assembly mission to the International Space Station, successfully launched from Florida's Kennedy Space Center on August 8, 2007..On March 19, 2021, United States President Joe Biden announced he intended to nominate former US Senator Bill Nelson (Democrat of Florida) to serve as National Aeronautics and Space Administration (NASA) Administrator. | usage worldwide. - Houston/Texas/United States of America