The largest known piece of Mars on Earth has now been sold for over $5 million. The auction of the Martian meteorite took ...

Sotheby's - the auction house which sold the meteorite - says it weighs 54lb (24.5kg) and is nearly 15in (38.1cm) long. A meteorite is a piece of rock that has come from outside of Earth.

The largest piece of Mars ever found on Earth has sold for just over $5 million at a Sotheby's auction in New York ...