Astronomy and Space

Exploration

What is the composition of the tiles on the underside of the space shuttle and how hot do they get?

The 20,000 tiles are composed of a low-density, high purity silica fiber insulator hardened by ceramic bonding. Bonded to a Nomex fiber felt pad, each tile is directly bonded to the shuttle exterior. The maximum surface temperature can reach up to 922K to 978K (649°C to 704°C or 1,200°F to 1,300°F).

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