NASA's next Mars rover is brawniest and brainiest one yet

With eight successful Mars landings, NASA is upping the ante with its newest rover. The spacecraft Perseverance -- set for liftoff this week -- is NASA's biggest and brainiest Martian rover yet. It sports the latest landing tech, plus the most cameras and microphones ever assembled to capture the sights and sounds of Mars. Its super-sanitized sample return tubes -- for rocks that could hold evidence of past Martian life -- are the cleanest items ever bound for space. A helicopter is even tagging along for an otherworldly test flight.