NASA's InSight Flexes Its Arm While Its 'Mole' Hits Pause
NASA's InSight lander has been using its robotic arm to help the heat probe known as the "mole" burrow into Mars. The mission is providing the first look at the Red Planet's deep interior to reveal details about the formation of Mars and, ultimately, all rocky planets, including Earth. Akin to a 16-inch-long (40-centimeter-long) pile driver, the self-hammering mole has experienced difficul