Valley networks on Mars show evidence for surface runoff driven by rainfall. Credit: Image courtesy of Elsevier
New study reveals how changes in Martian rainfall shaped the planet. Heavy rain on Mars reshaped the planet’s impact craters and carved out river-like channels in its surface billions of years ago. Changes in the atmosphere on Mars made it rain harder and harder, which had a similar effect on the planet’s surface as we see on Earth. Mars has geological features like the Earth and moon, eg. craters and valleys, many of which were formed through rainfall. Although there is evidence that there was once water on Mars, it does not rain there today.
But in their new study, geologists Dr. Robert Craddock and Dr...
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