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Why don't magnetic fields expelled by solar flares behave like light?
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I was just reading this news article about how the Northern Lights might be visible in Oregon tonight because of a solar storm: https://www.cnn.com/2020/12/09/us/northern-lights-display-wednesday-night-scn/index.html
The article states that a solar flare already happened on 12/7. Why aren't the magnetic fields created by the solar flare here already--i.e. why didn't they travel at the speed of light? Isn't it all EM radiation?
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