"Photographs." . . "Space transportation system flights." . . "Computer programs." . . . . "Frost." . . "Thermal protection." . . "Debris." . . "High speed photography." . . "Inspection." . . . . . . . . . . . . . . . . . . . . . . "Debris/ice/TPS assessment and photographic analysis for shuttle mission STS-36"@en . . . "Ice." . . "Space shuttles." . .