SpaceX Switching to Thin Tile Heat Shield Instead of Active Cooling

Elon Musk indicated that SpaceX will test thin ceramic tiles to protect the Super Heavy Starship from re-entry heat instead of using active transpirational cooling.

This will only need to be on 10-20% because the steel alloy could handle most of the re-entry temperatures.

The first stage super heavy booster does not require a heat shield because it only reaches mach 8 or 9.