Niger investigating $5 million sale of largest Mars rock

A 54-pound meteorite from Mars has sold for over $5 million at a New York auction, setting a world record FILE — A Martian meteorite, weighing 54.388 lbs. (24.67 kg), said to be the largest piece of Mars on Earth, at Sotheby's, in New York, July 9, 2... [4957 chars]