NASA InSight rover digs its 'mole' into the dusty Mars landscape

NASA’s InSight rover has dug its ‘mole’ about two centimeters into the surface of Mars, the space agency announced today. This process involved the spacecraft’s robotic arm, which is home to a heat probe NASA calls its ‘mole.’ The nickname refers to the probe’s purpose: it digs down into the ground to determine how much heat is escaping from the …