the.com/heat shield
the only thing between a returning spacecraft and becoming a very expensive shooting star.
reentry heatSurfaces can exceed 1,650 degrees Celsius on descent
by designAblative shields survive by deliberately burning away
shuttle tilesSo light a single tile balances on a marshmallow
deadly gapColumbia was lost to a damaged wing shield
plasma blackoutSuperheated gas blocks radio for tense silent minutes