New study explains why Mercury is black

March 31, 2015 7:10 PM

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New study explains why Mercury is black

Researchers used a cannon to blast sugar balls at a lunar basalt-like substance to mimic meteor impacts.

A new study reveals the source of color differentiation. Mercury, it turns out, has been regularly peppered by carbon from passing comets over the course of its planetary lifetime -- slowly but steadily darkening its surface.

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