Mars' Valles Marineris canyon is still tectonically active, study finds
Seismic data from NASA's InSight lander points to deep fault slip beneath the solar system's largest canyon
A marsquake recorded by NASA's InSight lander in August 2021 was caused by rocks slipping along fault lines deep beneath Valles Marineris, according to a new study. The finding indicates that the solar system's largest canyon remains tectonically active, despite Mars having no tectonic plates.