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16 x 12 inch plus 3/8 inch white border
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Cosmic rays are a deadly form of radiation originating outside our solar system. Without protection from these dangerous high-energy particles, life may not be possible, but the heliosphere surrounds and protects us from most of this onslaught. 

The heliosphere is the region of space that surrounds our solar system, where the solar wind (plasma) from our sun radiates outward and the magnetic field of the sun dominates space. This area ends well beyond Pluto, where it meets the interstellar medium and it&#