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6 · Explosive and Whirling Nebulæ ne of the most surprising triumphs of celestial O photography was Professor Keeler’s discovery, in 1899, that the great majority of the nebulæ have
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Document Date: 2003-03-17 16:40:22
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IndustryTerm
gas shells /
solar systems /
planetary systems /
/
Person
Keeler /
/
Position
Professor /
author /
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Product
Gemini /
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SocialTag
NGC objects
Spiral galaxies
Planetary science
Unbarred spiral galaxies
Nebula
Formation and evolution of the Solar System
Galaxy
Planetary nebula
Celestia
Astronomy