NASA InSight's 'Mole' is out of sight

NASA's InSight lander continues working to get its "mole"—a 16-inch-long (40-centimeter-long) pile driver and heat probe—deep below the surface of Mars. A camera on InSight's arm recently took images of the now partially filled-in "mole hole," showing only the device's science tether protruding from the ground.

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