An "unbelievably rare" piece largest piece of Mars, the largest ever found on Earth, recently commanded an astonishing $4.3 million at a New York auction, but with additional taxes and fees, the total price for the extraterrestrial rock soared to approximately $5.3 million.Dubbed NWA 16788, this remarkable meteorite weighs a colossal 54lb (24.5 kilogrammes) and measures nearly 15 inches (38.1 centimetres) long, the...