NASA's Curiosity Rover Drills Into 2nd Mars Rock
NASA's Mars rover Curiosity has broken out its trusty drill again, pulling samples from deep within a Red Planet rock for the second time ever. The 1-ton Curiosity rover bored 2.6 inches (6.6 centimeters) into a rock dubbed "Cumberland" on Sunday (May 19 ...http://www.nbcnews.com/id/51944150/ns/technology_and_science-space/t/nasas-curio...







