Mars Had Water on its Surface Much Longer Than Previously Known, Finds Study - News18

A new study by scientists at the California Institute of Technology has found that liquid water flowed on Mars as late as two billion years ago.
Billions of years ago, Mars rippled with rivers, ponds and an ocean that could have covered about 20 percent of the red planet. But the nice wet environment on Mars did not last and it started losing… [+2180 chars] Read More