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
Recent Examples on the Web
While the mission was designed with dark energy, dark matter, and exoplanets in mind, Roman’s unprecedented observational capability will offer practically limitless opportunities for astronomers to explore all kinds of cosmic topics.
—
Richard Tribou, The Orlando Sentinel, 30 May 2026
In its time orbiting Earth, Hubble has shaped our understanding of the universe by observing the atmospheric composition of planets around other stars and even discovering dark energy – a mysterious force that causes the universe to expand.
—Eric Lagatta, USA Today, 28 May 2026
Monodromic k-essence models of dark energy appear to match actual observations of the universe slightly better than quintessence.
—Wyatt Williams, Harpers Magazine, 26 May 2026
The effective equation-of-state parameter (a number cosmologists use to characterize dark energy, which equals exactly -1 for a true cosmological constant) comes out slightly greater than -1 in this model.
—Paul Sutter, Space.com, 26 May 2026
See All Example Sentences for dark energy
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Richard Tribou, The Orlando Sentinel, 30 May 2026
In its time orbiting Earth, Hubble has shaped our understanding of the universe by observing the atmospheric composition of planets around other stars and even discovering dark energy – a mysterious force that causes the universe to expand.
—Eric Lagatta, USA Today, 28 May 2026
Monodromic k-essence models of dark energy appear to match actual observations of the universe slightly better than quintessence.
—Wyatt Williams, Harpers Magazine, 26 May 2026
The effective equation-of-state parameter (a number cosmologists use to characterize dark energy, which equals exactly -1 for a true cosmological constant) comes out slightly greater than -1 in this model.
—Paul Sutter, Space.com, 26 May 2026
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 5 Jun. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
