nebular (bulutsu) hipotez

listen to the pronunciation of nebular (bulutsu) hipotez
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nebular hypothesis
(cosmology) the theory that the solar system evolved from a hot gaseous nebula
A theory of the origin of the solar system according to which a rotating nebula cooled and contracted, throwing off rings of matter that contracted into the planets and their moons, while the great mass of the condensing nebula became the sun