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Seismology on Mars: how the InSight mission is revealing the internal structure of the red planet

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“NASA’s InSight lander has been recording on Mars since November 2018. InSight is the first dedicated geophysical lander to be sent to another planet and it’s mission objective was to determine the internal structure of Mars. To do this the lander is equipped with a seismic station, a heat flow probe, meteorological sensors and an X-band radio transponder and transmitter designed to measure the planet’s rotation. The prime mission (two Earth years – one Mars year) was a huge success and InSight is now well into its extended mission. Mars is seismically active and the MarsQuake Service has catalogued over 1200 marsquakes so far. These quakes are mostly small in magnitude but, due to the low noise floor on Mars, they have been used, as on Earth, to determine the internal structure of the planet from the core to the crust. In this talk I will introduce my work with the MarsQuake Service; discuss the Martian seismic catalogue; demonstrate the differences between marsquakes and earthquakes; and report on the latest results for the interior structure of Mars.”

This talk is part of the Sedgwick Club talks series.

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