dark energy
noun
: a hypothetical form of energy that produces a force that opposes gravity and is thought to be the cause of the accelerating expansion of the universe
Examples of dark energy in a Sentence
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The results come courtesy of the Euclid space telescope, which is a European Space Agency mission that's designed to study dark matter and dark energy by measuring and mapping billions of galaxies.
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Keith Cooper, Space.com, 10 Dec. 2025
The most abundant ingredients in the universe are dark matter and dark energy, both of which are poorly understood.
—Chris Impey, The Conversation, 4 Dec. 2025
The researchers found that if dark matter and dark energy exchange energy, the shapes, spins, and alignments of dark matter halos—the massive structures that surround galaxies—change in measurable ways.
—Rupendra Brahambhatt, Interesting Engineering, 29 Nov. 2025
However, the nature of dark energy has remained a mystery, and its role in the universe’s expansion has been called into question before.
—Jacopo Prisco, CNN Money, 20 Nov. 2025
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Keith Cooper, Space.com, 10 Dec. 2025
The most abundant ingredients in the universe are dark matter and dark energy, both of which are poorly understood.
—Chris Impey, The Conversation, 4 Dec. 2025
The researchers found that if dark matter and dark energy exchange energy, the shapes, spins, and alignments of dark matter halos—the massive structures that surround galaxies—change in measurable ways.
—Rupendra Brahambhatt, Interesting Engineering, 29 Nov. 2025
However, the nature of dark energy has remained a mystery, and its role in the universe’s expansion has been called into question before.
—Jacopo Prisco, CNN Money, 20 Nov. 2025
See All Example Sentences for dark energy
Cite this Entry
“Dark energy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dark%20energy. Accessed 22 Dec. 2025.
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