NASA's Interior Exploration using Seismic Investigations, Geodesy and Heat Transport (InSight) lander detected dozens of small quakes on Mars, providing new insights into the planet's interior and how the Sun and wind influence seismic activity. The tremors were recorded by the lander's Seismic Experiment for Interior Structure (SEIS) instrument and are the first seismic signals definitively attributed to processes originating within Mars itself, following months of data analysis. Scientists found the seismic signals were strongest on the side of Mars facing the Sun and got stronger between noon and sunset local time. They also observed that more marsquakes occurred during periods when the planet's atmosphere was disturbed by strong winds. The detection of these quakes provides important information about the structure of the crust, upper mantle, and core, and their response to external stimuli.