Mars Has Quakes, Scientists Decide

From: Chicago Sun-Times | Date: November 7, 1992| Author: Judy Pasternak | Copyright information

PASADENA, Calif. Earth is not the only planet that experiences earthquakes, scientists with the Jet Propulsion Laboratory and the U.S. Geological Survey have concluded. The first observational evidence of Marsquakes comes from a review, published in the journal Science, of thousands of faults visible in Viking orbiter photographs from the 1970s.

Marsquakes probably are seldom larger than a magnitude 5.8, but shocks that powerful may occur every 4 1/2 years; a magnitude 4.9 shakes th...

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