The Hidden Shield: Understanding Planetary Magnetic Fields

This diagram illustrates the invisible shield that protects planets from cosmic radiation and solar wind—the magnetic field. Surrounding the planet, the curved contour lines represent how magnetic forces extend outward and loop back, forming a protective cocoon known as the magnetosphere. On Earth, this field deflects charged particles from the Sun, creating phenomena such as auroras near the poles. Studying magnetic fields not only helps us understand planetary environments but also guides exploration of habitability on worlds beyond Earth.