It's another meteoric rise for what's called the largest piece of Mars on Earth. The 54-pound rock fetched nearly $5.3 ...

A Ceratosaurus fossil that is one of only four known to exist has sold for $30.5 million at auction. The rare dinosaur fossil is “one of the finest and most complete examples of its kind ever found,” ...

An auction in New York City featured rare geological artifacts, including the largest piece of Mars sold for $5.3 million and a juvenile dinosaur skeleton that fetched over $30 million, marking it as ...