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Diffuse ionized gas
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The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
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Diffuse ionized gas: References & Edit History

Article Contributors

Primary Contributors

  • John S. Mathis
    Professor of Astronomy, University of Wisconsin, Madison.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Article title updated for style. Nov 09, 2026
Add new Web site: European Council for Nuclear Research - CERN Document Server - The Warm Ionized Medium in Spiral Galaxies: A View from Above. Feb 23, 2016
New article added. May 20, 2009
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