Question

you have probably heard that space craft returning to the earth has to be protected by a heat shield covering it.find out why ?what is the material used as the heat shield ? what are the materials used in space craft ​

Answer 1

Answer:

The rigid heat shield has, until recently, been made from solid steel, but is now often made from aluminum. Some high-end rigid heat shields are made out of aluminum sheet or other composites, with a ceramic thermal barrier coating to improve the heat insulation.