At one of Sotheby's Geek Week events, hosted at NYC's own American Museum of Natural History, this Martian meteorite smashed through bidding expectations, nabbing $5.3 million. This meteorite, affectionately dubbed NWA 16788, isn't just any space rock, though. Not only did it fetch the highest price of any meteorite ever, it's also the largest, most scientifically significant piece of Mars that we Earthlings have access to.