Scientists want next Mars rover to search for signs of life, test out astronaut tech

NASA really wants to put another rover on the surface of Mars in 2020. The goals of that mission are still being ironed out, but a panel of 19 scientists appointed by the space agency have come up with some rather compelling suggestions. Over the course of a 154-page document, which will serve as the starting point, the scientists propose that looking for signs of life and testing out technologies for a future manned mission should be high on the list of objectives. The Mars 2020 Science Definit...