Summary

A team of researchers has produced the first global, three-dimensional estimates of the sun's magnetic field, including the area beyond the sun's visible edge. This marks a step toward more accurate models of solar activity—and ultimately, better predictions of solar magnetic eruptions, which are the root cause of extreme space weather that can impact critical infrastructure technologies on Earth. Scientists have been able to observe the structure of the sun's upper atmosphere—called the corona—for decades but haven't been able to measure the full magnetic field responsible for shaping it.

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