“NASA’s InSight lander on Mars felt two relatively large quakes shake the Red Planet last month. InSight uses these shakes on Mars – caused by volcanic activity – to learn more about the interior of the planet. The two quakes, which were felt on March 7 and March 18, were magnitudes 3.3 and 3.1. ‘It’s wonderful to once again observe marsquakes after a long period of recording wind noise,’ John Clinton, an InSight scientist, said in a statement. ‘One Martian year on, we are now much faster at characterizing seismic activity on the Red Planet.’ The quakes seemed to come from a region called Cerberus Fossae, the same area where two other strong shakes were felt earlier in the mission. The waves from all four of those relatively strong quakes traveled like quakes do on Earth – through the planet. Other shakes on Mars have been more like those seen on the Moon, which are more ‘scattered,’ according to NASA” – Axios.
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