Magnetosphere

The United States launched Explorer I, II, III, and IV, making a significant discovery about Earth's magnetic field around the atmosphere. This led to the identification of the magnetosphere, which has implications for navigation and electronic equipment.
 James Alfred Van Allen United States 1958 Magnetosphere

The United States launched Explorer I, II, III, and IV, making a significant discovery about Earth's magnetic field around the atmosphere. This led to the identification of the magnetosphere, which has implications for navigation and electronic equipment.