NASA’s Mars 2020 rover finally has its head

NASA's Mars 2020 mission will be its most ambitious trip to the Red Planet yet. The Mars 2020 rover is absolutely packed with the latest high-tech instruments, and while the mission isn't scheduled to begin until next summer, excitement is already building in a big way.Recently, NASA began hosting a live stream where viewers can watch its engineers slowly testing and assembling the components that will be shot skyward. As NASA's Jet Propulsion Laboratory boasts in a new blog post, the rover just