nebular hypothesis


: a hypothesis in astronomy: the solar system has evolved from a hot gaseous nebula

Example Sentences

Recent Examples on the Web According to the nebular hypothesis , and within that disk, a combination of small collisions and gravity eventually pulls the dust together into planets. Sophie Bushwick, Discover Magazine, 29 Aug. 2012 For some quick context: Ever since Immanuel Kant introduced his nebular hypothesis in 1755, scientists have strongly suspected that planets form in swirling clouds around newborn stars. Corey S Powell, Discover Magazine, 6 Nov. 2014 Beginning around 1860, Kelvin and other physicists started estimating the ages of the Earth and Sun using the nebular hypothesis proposed around 1750 by Immanuel Kant and Pierre Laplace. Mano Singham, Scientific American, 5 Sep. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'nebular hypothesis.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1833, in the meaning defined above

Time Traveler
The first known use of nebular hypothesis was in 1833

Dictionary Entries Near nebular hypothesis

Cite this Entry

“Nebular hypothesis.” Dictionary, Merriam-Webster, Accessed 4 Jun. 2023.

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