What a difference a day makes…
So what keeps it from burning up on entry?
The Heat Shield
Phenolic Impregnated Carbon Ablator (PICA) was developed by NASA Ames Research Center. An improved and easier to manufactured version called PICA-X was developed by SpaceX in 2006-2010 at cost 10 times less than the NASA PICA. A PICA-X heat shield is theoretically re-usable hundreds of times with only minor degradation.
SOLEC’s LO/MIT-I Radiant Barrier Coating