{video} NASA's about to break new ground like never before, by sending a giant drill to Mars. It's the largest drill NASA has ever sent to space, and it will dig deeper into Mars than ever before. The mission? Uncover clues to one of the most outstanding mysteries in our solar system. NASA's $850 million InSight Lander is the first designed to study the interior structure of Mars. Until now, NASA's landers mainly focused on exploring Mars' surface for signs of potential life. They've touched down near volcanoes, valleys, and canyons. But InSight won't be going anywhere like that, since InSight is not a rover and ... (full story)