A groundbreaking discovery has revealed a strange, invisible force field encircling Earth: the ambipolar electric field. It may not be as apparent as some other fields of science, but this one is vital in determining the environment we have around us and shields us from things like meteors and dangerous cosmic rays.

Known as a shield that “separates us from the universe,” it doesn’t exclude us from the vast, deadly space but helps humanity survive. Here is an attempt to present a detailed picture of its interesting dynamics.