Marsquake Sol 235 (VIDEO) University of Maryland This video is under embargo. Please login to access this video. Caption 7 seconds: In this seismogram of a marsquake you can see and hear the two distinct waves recorded by the InSight mission's seismometer on Sol 235. A compression wave hits first, followed by a shear wave. The different travel times of these waves enable scientists to determine the source of quakes and the materials they travel through. (The recording has been slowed down from the original by more than 200 times.) Credit University of Maryland Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.