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Generally, high solar activity deflects or absorbs truly cosmic rays. There's an eleven year cycle in the intensity of extrasolar cosmic rays reaching the earth.


Cosmic radiation (which consists of high-energy protons and atomic nuclei) comes from the sun, other stars, even other galaxies. Solar wind is a part of that - the part coming from the sun, which mostly consists of electrons, protons and alpha particles with kinetic energy between 0.5 and 10 keV

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