A 54-pound meteorite from Mars sold for more than $5 million when it went up for auction on Wednesday at Sotheby's.

A meteorite that is the largest known piece of Mars on Earth has sold for $5.3 million, with taxes and fees, to an anonymous bidder at a Sotheby’s New York auction Wednesday.

The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and archaeological objects in New York on Wednesday. But a rare young dinosaur skeleton stole the show when it fetched more than $30 million in a bidding frenzy.