But where did all that liquid go?
NASA/Goddard Space Flight Center / Via nasa.gov
There has been evidence that Mars had a rich topography of precipitation, but new research suggests that the Red Planet may have had even more water than our very own Arctic Ocean.
Scientists estimate that about 4.5 billion years ago, Mars had enough water to cover its whole surface, a new study published in Science magazine suggests.
Based on Mars' face today, the prime locale for the ancient ocean is the depressed land of its Northern Plains, where it would have covered 20% of the planet.
NASA Goddard / Via youtube.com
