There are two main reasons why the Apollo reentry capsule appeared less black than the Soyuz capsule after landing:

Heat Shield Material: Both capsules relied on heat shields to absorb the tremendous heat generated during atmospheric reentry. However, they used different materials:

Apollo: Used an ablative heat shield made of a resinous material filled with millions of tiny fiberglass spheres. This material burned away during reentry, leaving a lighter brown or tan colored char on the surface.
Soyuz: Employed a heat shield made of phenolic impregnated fabric. This material charred black due to the extreme heat, giving it a darker appearance after landing.

Reentry Profile: The reentry profiles of the two capsules differed slightly.

Apollo: Followed a lifting reentry, which provided some aerodynamic lift and allowed for more control of the landing zone. This shallower reentry resulted in a bit less heating on the heat shield compared to the Soyuz.
While both capsules endured scorching temperatures during reentry, the material composition and reentry profiles led to the Apollo capsule appearing less charred and black than the Soyuz upon landing.


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