A solar flare erupts on the limb of the Sun in this 2015 image. A similar solar storm in 1967 created concerns that the Soviet Union was trying to jam American early warning radar systems. [NASA/SDO]
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A solar flare erupts on the limb of the Sun in this 2015 image. A similar solar storm in 1967 created concerns that the Soviet Union was trying to jam American early warning radar systems. [NASA/SDO]