Remembering Challenger’s STS-51L AstronautsCrew members of mission STS-51L gather in the White Room at Pad 39B following the end of the Terminal Countdown Demonstration Test.Image Credit: NASARead More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/remembering-challengers-sts-51l-astronauts-2/Copy URL to clipboard> DownloadShareImage CreditNASASize1041x675px