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home of Carl Sagan Productions.
http://www.carlsagan.com/
PageRank: Not available
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offers biographical information for, and quotes from, the man who was first able to show that the universe is expanding, and is considered to be the father of observational cosmology.
http://www.edwinhubble.com/
PageRank: Not available
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pictures and quizzes dedicated to Galileo Galilei, his inventions, and discoveries.
http://www.galileo-galilei.org/
PageRank: Not available
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concentrates on the Ptolemies and their world, from 331 - 30 BCE.
http://www.houseofptolemy.org/
PageRank: Not available
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covering the life and work of the 16th century astronomer.
http://www.johanneskepler.com/
PageRank: Not available
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dedicated to increasing knowledge and public awareness of the universe and the natural world through programs of scientific research and education.
http://www.mmo.org/
PageRank: Not available
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