NASA’s InSight lander, which was launched on May 5, 2018, recently recorded 100 events up to date through its Seismic Experiment for Interior Structure (SEIS).
It is a sensitive seismometer built on the lander that can record Marsquake and other Mars-made sounds. Out of 100, only 21 are considered Marsquakes and these are enhanced for human ears. Due to its sensitivity, it can even record the movements of the lander’s arms as well as the planets’ breeze.
Through the help of Centre National d’Études Spatiales (CNES), a French space agency, and its partners, the instrument is able to complete InSight’s capabilities by measuring Mars’ seismic activities and providing accurate 3D models. It started to do its duty as soon as the lander successfully reached Mars on November 26, 2018 after its 483,000,000 km journey.
“It’s been exciting, especially in the beginning, hearing the first vibrations from the lander,” said Constantinos Charalambous, an InSight science team member at Imperial College London who works with the SP sensors. “You’re imagining what’s really happening on Mars as InSight sits on the open landscape.”
The NASA recently shared recorded sounds from two quakes detected the instrument: one that happened on May 22 and another that took place July 25. The said marsquakes are around magnitude 3.7 and 3.3, respectively. Listen to them below: