
Largest Mars rock ever found on Earth sells for $4.3m at auction
An "unbelievably rare" piece of Mars - the largest ever found on Earth - has sold for $4.3m (£3.2m) at a New York auction on Wednesday. The meteorite known as NWA 16788 weighs 54lb (24.5kg) and is nearly 15in (38.1cm) long, according to Sotheby…