From NPR.

The biggest meteorite from Mars ever found on Earth sold at auction in New York yesterday for $5.3 million.

Sotheby’s says the martian rock, which weighs more than 54 pounds and is 15 inches long, broke off from the surface of Mars after an asteroid strike. Then, after traveling some 140 million miles through space, it landed in the Sahara Desert in Niger.

The auction house says the rock represents about 6.5% of all martian material on Earth.

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