A rare rock from Mars known as Meteorite NWA 16788 will be up for auction at Sotheby's on July 16. The meteorite may sell for as much as $4 million, according to the auction house.

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The rock was discovered on Nov. 16, 2023, by a meteorite hunter in a remote part of Niger in West Africa. It is about 70% larger than the next biggest piece of Mars rock on Earth, per Sotheby’s.

Ejected material, mostly breccia (angular rocks cemented by clay), can be found far as 3 to 4 km (1.8 to 2.5 mi) from the largest craters.” ...

NEED TO KNOW The largest rock from Mars ever found on Earth is going up for auction at Sotheby’s on July 16 The meteorite, known as NWA 16788, weighs about 54 lbs. and is approximately 15 inches ...