Thermal Protection System TileA Reconstruction Team member identifies recovered TPS (Thermal Protection System) Tiles. Columbia had more than 20,000 tiles on its surface.Image Credit: CAIB Photo no photographer listed 2003 Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/tileid2/Copy URL to clipboard> DownloadShareTagsNASA HistoryImage CreditCAIB Photo no photographer listed 2003Size2108x1612px