Mars Express reveals the Red Planet's volcanic past

A new analysis of impact cratering data from Mars reveals that the planet has undergone a series of global volcanic upheavals. These violent episodes spewed lava and water onto the surface, sculpting the landscape that ESA’s Mars Express looks down on today.

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<p><a href="http://www.physorg.com/news124715317.html">Mars Express reveals the Red Planet's volcanic past</a></p> <p>A new analysis of impact cratering data from Mars reveals that the planet has undergone a series of global volcanic upheavals. These violent episodes spewed lava and water onto the surface, sculpting the landscape that ESA’s Mars Express looks down on today.</p>