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nebular hypothesis
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nebular hypothesissee also island universe hypothesis2001-09-27 09:34:04.0
has definition Hypothesis, maintained in the nineteenth and early twentieth century, that the spiral nebulae are not galaxies but are instead whirlpools of gas from which new systems of stars and planets are condensing. Compare island universe theory.has source: Ferris, T. 1988 Coming of Age in the Milky Way, Morrow, 2001-09-27 09:34:04.0
is a kind of outdated belief2001-09-27 09:34:04.0