A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million. It’s up for auction at Sotheby’s. Known as NWA 16788, the meteorite weighs 54 pounds (24.5 kilograms ...
A large rock broke off Mars’s surface when an asteroid struck the planet, sending it flying through space. The roughly 54-pound slab then traveled 140 million miles to Earth, where it breached the ...
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