A magnetosphere is a region around a planet where its magnetic field interacts with charged particles from the solar wind. This magnetic field helps protect the planet from harmful solar radiation and cosmic rays, creating a shield that deflects these particles. Earth’s magnetosphere is crucial for maintaining conditions that support life. Different planets have varying magnetospheres depending on their magnetic fields and atmospheres. For example, the magnetosphere of Jupiter is much larger and stronger than that of Earth, due to its rapid rotation and internal dynamics. Understanding magnetospheres helps scientists learn more about planetary environments and their potential for supporting life.