NASA's InSight lander has detected the very first quake on another planet - Mars. Here's how they detected it, what it revealed, why it matters, and what the future holds.
that “it’s hard to know for sure” why the signal is so weak. They can’t yet properly identify individual components of the seismic signal, and researchers “don’t yet know Mars well enough to understand the characteristics of the waveforms.” It’s likely to be a result of multiple factors, though.
As the name suggests, earthquakes are unique to Earth, but that doesn’t mean that tectonic activity – the movement of faults, in this case – doesn’t happen elsewhere. Until now, though, scientists couldn’t say for sure that so-called marsquakes were still taking place on the Red Planet. Then there’s SEIS, which will listen to the pulse of our planetary neighbour. The detection of marsquakes will give us an understanding of how seismically active the Red Planet still is, eons after it gave up the geological ghost . At the same time, the manner in which those seismic waves propagate through its rocky innards will betray to InSight’s science team just what those innards are like.
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