What’s going on beneath the surface of Mars? More than you might think
NASA/JPL-Caltech
The most powerful quake ever recorded on Mars was produced by tectonic forces from within its crust, not a meteor impact, which suggests that the Red Planet might be much more seismically active than previously thought.
In 2022, NASA’s InSight lander detected a magnitude-4.7 marsquake, called S1222a, which was five times larger than the previous most powerful one on record. Scientists had found fresh meteor craters associated with the next two biggest marsquakes, so they thought …