nebular hypothesis


nounAstronomy.
  1. the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.

Origin of nebular hypothesis

1
First recorded in 1830–40

Words Nearby nebular hypothesis

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How to use nebular hypothesis in a sentence

  • Taken in connection with what we know of the nebulæ, the proof of Laplace's nebular hypothesis may fairly be regarded as complete.

    Outlines of the Earth's History | Nathaniel Southgate Shaler
  • Allied to the preceding hypothesis is Shapley's nebular hypothesis.

    Climatic Changes | Ellsworth Huntington
  • A friend observes that this Poem is a remarkable exposition of the nebular hypothesis, as sanctioned by geologists.

  • The nebular hypothesis almost necessarily supposes matter to have originally formed one mass.

  • It had no sort of relation to the more modern, but equally misleading, “nebular hypothesis.”

    History of Astronomy | George Forbes

British Dictionary definitions for nebular hypothesis

nebular hypothesis

noun
  1. the theory that the solar system evolved from the gravitational collapse of nebular matter

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for nebular hypothesis

nebular hypothesis

[ nĕbyə-lər ]


  1. A model of star and planet formation in which a nebula contracts under the force of gravity, eventually flattening into a spinning disk with a central bulge. A protostar forms at the nebula's center. As matter condenses around the protostar in the bulge, planets are formed from the spinning matter in the disk. This theory is widely accepted to account for the formation of stars and planetary systems such as ours. The first version of the nebular hypothesis was proposed in 1755 by the German philosopher Immanuel Kant and modified in 1796 by Pierre Laplace.♦ The nebula that according to this hypothesis condensed to form the solar system is called the solar nebula.

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