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The sun's magnetic field spirals out into the solar system like water from a lawn sprinkler. (Why? The sun spins like a lawn sprinkler does.) The magnetic field emerging from solar longitude 60o W bends around and intersects Earth. Protons are guided by magnetic force fields so, on January 20th, there was a superhighway for protons leading all the way from sunspot 720 to our planet.
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Originally posted by rajaten
what does it mean???
Originally posted by rajaten
Note the orange segments in the picture, these are very high levels!
Originally posted by Chadwickus
Sunspot 720 released an X7 flare on the 20 January 2005, the solar wind density went as high as 29 protons/cm3.
The protons reached earth in a matter of minutes instead of hours (or days).
This is because the sunspot was in an area that magnetically connects the sun with the earth, 60° west longitude.