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'''Solar wind''' is particles, usually [[electron]]s and [[proton]]s, continually streaming away from the corona of the [[Sun]]. The solar wind is extremely sparse, containing only a few fast moving particles per cubic centimeter at the Earth. The exact geometry and extent of the solar wind is not well known.
'''Solar wind''' is particles, usually [[electron]]s and [[proton]]s, continually streaming away from the corona of the [[Sun]]. The solar wind is extremely sparse, containing only a few fast moving particles per cubic centimeter at the Earth. The exact geometry and extent of the solar wind is not well known.
The solar wind creates the Heliosphere, a bubble in the interstellar medium surrounding the [[solar system]]. Solar wind also creates the the [[aurora]] or "Northern Lights", and causes the tails of [[comet|comets]] to always point away from the sun.
== Sources ==
== Sources ==
[http://apod.nasa.gov/apod/lib/glossary.html#sol_wind APOD Glossary]
[http://apod.nasa.gov/apod/lib/glossary.html#sol_wind APOD Glossary]
[http://helios.gsfc.nasa.gov/heliosph.html Heliosphere]
[[Category:Astronomy]]
[[Category:Astronomy]]