NASA's next nuclear-powered Mars rover, slated to launch in 2020, is slowly coming together. And while the Mars 2020 mission is largely based on NASA's Mars rover Curiosity, which is now exploring the Red Planet, there are a variety of distinctions that set it apart.
NASA's Mars 2020 rover mission is expected to explore a select site that's geologically diverse, is likely to have been habitable and to seek out signs of past life.