cosmology
noun
cos·mol·o·gy
käz-ˈmä-lə-jē 
plural cosmologies
1
a
: a branch of metaphysics that deals with the nature of the universe
b
: a theory or doctrine describing the natural order of the universe
2
: a branch of astronomy that deals with the origin, structure, and space-time relationships of the universe
also
: a theory dealing with these matters
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Cosmology and Star Trek
Most religions and cultures include some kind of cosmology to explain the nature of the universe. In modern astronomy, the leading cosmology is still the Big Bang theory, which claims that the universe began with a huge explosion that sent matter and energy spreading out in all directions. One reason why fans watch Star Trek is for the various cosmologies depicted in the show, including different conceptions of space, time, and the meaning of life.
Examples of cosmology in a Sentence
Recent Examples on the Web
MadEvolve has been put to the test in some of the most challenging corners of computational cosmology.
—
Paul Sutter, Space.com, 22 Mar. 2026
Stargazing sessions also encompass Andean cosmology, looking at how the Lican Antay interpret the night sky.
—Mark Johanson, Outside, 18 Mar. 2026
For example, to understand how Andean cosmology shapes the night sky, how ranching traditions persist in remote Patagonian valleys, or why the culture of Chiloé feels distinct from the mainland.
—Condé Nast, Condé Nast Traveler, 17 Mar. 2026
Creation stories, cosmologies, maps, myths, even cities are all forms of worldbuilding.
—Michael James Rocha, San Diego Union-Tribune, 8 Mar. 2026
See All Example Sentences for cosmology
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Paul Sutter, Space.com, 22 Mar. 2026
Stargazing sessions also encompass Andean cosmology, looking at how the Lican Antay interpret the night sky.
—Mark Johanson, Outside, 18 Mar. 2026
For example, to understand how Andean cosmology shapes the night sky, how ranching traditions persist in remote Patagonian valleys, or why the culture of Chiloé feels distinct from the mainland.
—Condé Nast, Condé Nast Traveler, 17 Mar. 2026
Creation stories, cosmologies, maps, myths, even cities are all forms of worldbuilding.
—Michael James Rocha, San Diego Union-Tribune, 8 Mar. 2026
See All Example Sentences for cosmology
Cite this Entry
“Cosmology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmology. Accessed 31 Mar. 2026.
Copy CitationKids Definition
cosmology
noun
cos·mol·o·gy
käz-ˈmäl-ə-jē
plural cosmologies
: a branch of astronomy that deals with the beginning, structure, and space-time relationships of the universe
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