What component of the Martian atmosphere causes harsh erosion of the heat shield tiles during atmospheric entry?

Answer

Higher levels of atomic oxygen

The heat shield tiles, made of metallic-ceramic materials, must withstand intense heating exacerbated by the presence of atomic oxygen in the Martian atmosphere, which erodes them more severely than on Earth.

What component of the Martian atmosphere causes harsh erosion of the heat shield tiles during atmospheric entry?

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