Are There Earthquakes on Other Planets? We Asked a NASA Expert

Are there earthquakes on other planets? There sure are, but we don't call them earthquakes. Instead, "moonquakes" & "marsquakes" are shaking things up in space. Dr. Jacob Richardson of NASA's Goddard Space Flight Center explains more about what otherworldly quakes can teach us about not only the interiors of planetary bodies, but also what's happening inside Earth.