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
Her work explores Anishinaabe ways of knowing, cosmology, ecology, and the liberatory potentials of language as art.
—
Hazlitt, 17 May 2025
That challenges the current standard model of cosmology and suggests that the Universe’s future is unpredictable.
—Jamie Carter, Forbes.com, 16 May 2025
The controversy goes all the way down to the foundations of modern cosmology, centering on a parameter unceremoniously known as w(z).
—Lyndie Chiou, Scientific American, 30 Apr. 2025
One particular concern in cosmology is the fact that, unlike the case of planets, there is only one universe to study.
—Chris Impey, The Conversation, 25 Apr. 2025
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Hazlitt, 17 May 2025
That challenges the current standard model of cosmology and suggests that the Universe’s future is unpredictable.
—Jamie Carter, Forbes.com, 16 May 2025
The controversy goes all the way down to the foundations of modern cosmology, centering on a parameter unceremoniously known as w(z).
—Lyndie Chiou, Scientific American, 30 Apr. 2025
One particular concern in cosmology is the fact that, unlike the case of planets, there is only one universe to study.
—Chris Impey, The Conversation, 25 Apr. 2025
See All Example Sentences for cosmology
Cite this Entry
“Cosmology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmology. Accessed 28 May. 2025.
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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