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Astro Bob

Listen To The First Marsquake / Japanese Blast Hole In Asteroid Ryugu

26 Apr 2019, 16:41 UTC
Listen To The First Marsquake / Japanese Blast Hole In Asteroid Ryugu
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First Likely Marsquake Heard by NASA’s InSight on April 6. All the sounds were detected as ground vibrations by InSight’s seismometer and sped up by a factor of 60 to make them audible to our ears.
Mars is a rumblin’. This week, the InSight lander team shared the news of the first recorded marsquake. The new seismic event was small compared to Earth’s routine shifts and slides, but you can clearly hear it in the video. Similar to the moonquakes detected on the lunar surface during the Apollo missions, it was a small but relatively long duration event.
NASA’s Apollo astronauts installed five seismometers that measured thousands of quakes while operating on the Moon between 1969 and 1977. Different materials can change the speed of seismic waves or reflect them, allowing scientists to use the waves to learn about the interior of the moon and model its formation. Similarly, scientists hope to learn the secrets of Mars’ interior by studying Martian reverberations with InSight’s seismometer.
This image, taken March 19, 2019 by a camera on NASA’s Mars InSight lander, shows the rover’s domed Wind and Thermal Shield, which covers its seismometer. NASA/JPL-Caltech
Three other seismic signals occurred on March 14, ...

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