Space Weather Observations With InSight

Solar activity, in the form of coronal mass ejections and corotating interaction regions, results changes solar wind that propagate out through system interact with magnetic field environments planets. Such phenomena have been observed to affect plasma around Mars as seen from orbit. However, no surface observations previously possible because absence ground-based instrumentation. Here, for first time, we observe effects increased activity magnetometer on InSight mission December 2020. We find several days including fluctuations at periods minutes hours. Although only flanks this relatively weak ejection hit Mars, provide insight into how alters fields surface.