Space Shuttle Discovery RolloutSpace shuttle Discovery rolls to the launch pad on April 23, 1999Image Credit: NASA Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/492789main_99pp0432_full/Copy URL to clipboard> DownloadShareTagsKennedy Space CenterSpace Launch System (SLS)WebMod GrandfatheredImage CreditNASASize2922x1933px