I just heard (from Veritasium) that the latest Mars lander will be able to detect ground motion smaller than the diameter of a hydrogen atom! WTF?
Finally, we may be able to find out what the interior of Mars is like.
They turned the sensors on during the flight, since they expected no vibrations in space. They wanted to see what absolute quiet looked like. Turns out there was a small, steady fluctuation -- the seismometers were picking up their own atomic thermal vibrations.
I mean, dayamn.
Anyway, the seismometers are sensitive enough that they will be able to pick up the surface waves from marsquakes, as well as the P and S waves, and they will be able to use those to pinpoint the epicenter of the quake -- yes, they're going to triangulate from a single point. That blew my mind as much as the sensitivity of the device.