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Nebular Theory

Definition: The nebular theory is a scientific hypothesis that explains the formation and evolution of stars and planets from a nebula - a large cloud of gas and dust in space.

Sense 1 (Scientific):

Noun: The nebular theory states that stars and planets are formed from the contraction of a nebula under the influence of gravity.

Example sentence: The nebular theory suggests that our solar system was formed by the collapse of a giant molecular cloud.

Sense 2 (Popular):

Noun: In popular culture, the nebular theory often refers to the idea that all matter in the universe originated from a cosmic explosion known as the Big Bang.

Example sentence: According to the nebular theory of the universe's origin, all galaxies and stars were once condensed in an extremely hot and dense state.

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