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Cosmicopia
The heliosphere is a large area, or bubble, carved out of interstellar space by the solar wind. Astrophysics Basics covers its composition, energetic particles, acceleration, and magnetic fields. There is information about Cosmic Rays and a diagram of the Heliosphere . Also available are a glossary, history of astronomy, and a chance to Ask a Physicist along with a topically organized archive of previously asked questions. Additionally, there are related links.
http://helios.gsfc.nasa.gov/
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