The unmanned Atlas 5 rocket blasts off from Cape Canaveral Air Force Station in Florida on Saturday, launching a $2.5 billion nuclear-powered NASA rover - Curiosity, toward Mars to look for life habitats there. The six-wheeled, one-armed wonder, Curiosity, will reach Mars next summer and use its jackhammer drill, rock-zapping laser machine and other devices to search for evidence that Earth's next-door neighbor might once have been home to the teeniest forms of life. [Xinhua]