Valles Marineris in the Laboratory? | Space News

The most stupendous feature on Mars is Valles Marineris, the great trench stretching more than 3000 miles across the Martian surface. In the 1970’s the engineer Ralph Juergens first proposed that Valles Marineris is the scar left by a giant, interplanetary lightning bolt. If these events did occur, can they…