Don't we know how the magnetic field of the Sun is created?
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It’s taken half a century, but we’re finally getting a handle on our Sun’s complex magnetic field. A new model from NASA captures the strange surface interactions that create dramatic swirls of plasma and coronal mass ejections .If we can better understand the Sun’s magnetic field, we might one day be able to predict when it will have an eruption triggering a solar storm.
It took until the 1950s for us to really see the Sun, peering beyond the visible spectrum to catch a glimpse of the twisting loops of the superheated corona. After decades of observations and modeling, we pieced together that the plasma flows in response to a changing magnetic field. That field drives solar explosions and storms that are potentially devastating here on Earth, and saturates our Solar System with troublesome radiation. And yet, we’re still puzzled by it.
It took until the 1950s for us to really see the Sun, peering beyond the visible spectrum to catch a glimpse of the twisting loops of the superheated corona. After decades of observations and modeling, we pieced together that the plasma flows in response to a changing magnetic field. That field drives solar explosions and storms that are potentially devastating here on Earth, and saturates our Solar System with troublesome radiation. And yet, we’re still puzzled by it.
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Explanation:
Because the Sun is a sphere, the equatorial surface rotates faster than the poles. This results in the solar magnetic field growing tangled, which in turn can produce very strong localised magnetic fields all over the Sun, opening up the sunspots from which flares emerge.
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