A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally cracked through its unremarkable exterior. When the rover rolled its 899-kilogram (1,982-pound) body over the rock back ...

A rock on Mars spilled a surprising yellow treasure after Curiosity accidentally cracked through its unremarkable exterior. When the rover rolled its 899-kilogram (1,982-pound) body over the rock ...

Armed with a metal detector, he discovered something out of the ordinary – a very heavy, reddish rock ... make a crack. That's because what he was trying so hard to open was no gold nugget.