The idea of putting a Star Trek-like force field around the entire Earth seems like the fodder for a fairly silly science fiction epic out of the 1930s, but according to space scientists, such a barrier already exists. Discovered by a pair of NASA space probes, the natural shield protects the Earth and near-Earth satellites from so-called "killer electrons" with a precision that cuts it off like a wall of glass... Continue Reading Raise shields: Protective invisible barrier found surrounding Earth
Section: Space
Tags: NASA, Radiation, University of Colorado, Van Allen Belts
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