The early Martian atmosphere likely didn’t contain enough carbon dioxide to keep the planet warm enough for liquid water, according to National Aeronautics and Space Administration scientists. New findings further complicate the mystery of how the chilly planet could have once been home to the lakes and rivers that left their marks on its surface. Geological evidence from the Curiosity rover shows evidence of lake beds and...

Source: Wall Street Journal February 06, 2017 20:15 UTC