NASA has announced that the next Mars rover -- currently codenamed Mars 2020 -- will be outfitted with an array of sophisticated, upgraded scientific instruments that will let it delve deeper and farther than Curiosity, with the hope that it will be able to uncover signs of life on Mars. Perhaps even more excitingly, Mars 2020 will also be equipped with a new instrument that can convert the carbon dioxide in Mars' atmosphere into oxygen -- this is of utmost importance if humanity ever colonizes Mars -- and another instrument that will gather and store Martian rock samples for eventual return to Earth.