Year in review: Business booming on Mars

Rovers, orbiters add to Red Planet data

mars rover curiosity

LITTLE BITS  The rover Curiosity (shown) reached the base of Mars’ Mount Sharp in September and drilled rock samples. Mars now has seven robots studying it, and together they have given scientists their best view of any planet in the solar system other than Earth.

JPL-Caltech/NASA, MSSS

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