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Scientists are getting their best look yet at the magnetosphere, the region of space under the invisible influence of Earth's magnetic field, from a new satellite sweeping over the poles at altitudes of up to 32,000 miles called POLAR.

Sweeping over the poles at altitudes of up to 32,000 miles, a new satellite called POLAR is giving scientists their best look yet at the magnetosphere, the region of space under the invisible influence of Earth's magnetic field.