What is unusual about the asteroid Mathilde,which was studied and photographed by the NEAR spacecraft (Figure 8-18a,Comins,Discovering the Essential Universe,6th ed.) ?
A) Mathilde is not much denser than water.
B) Almost no craters are visible anywhere on Mathilde''s surface.
C) Mathilde''s surface is very bright, possibly a result of fresh material thrown out by impacts.
D) Mathilde has a much higher mass for its volume than any other known asteroid.
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