Would a large coronal mass ejection affect the earth evenley
No, the effects on Earth from a large coronal mass ejection (CME) would disproportionately affect higher geographic latitudes in the form of ground induced currents. The side facing the Sun, called the dayside, would also suffer more spacecraft anomalies from solar energetic particles (SEPs). However, the nightside is not safe either. A strong geomagnetic storm induced by a strong CME can cause large influxes of relatively low energy electrons from the geomagnetic tail, which can charge up spacecraft enough to cause arcing and ablation. The radiation belts are also enhanced during such storms, which can cause single event upsets in spacecraft electronics and increase the material fatigue of spacecraft components. These energetic particles also increase the rate of damage to solar panels, thus reducing a spacecraft's life time.