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
First discovered observationally in the 1990s, dark energy makes up the majority of the energy in the Universe, and causes our cosmic expansion to accelerate over time, driving unbound structures apart.
—
Big Think, 17 Oct. 2025
Scientists know even less about dark energy, which makes up the remaining 68% of the universe.
—Eric Lagatta, USA Today, 13 Oct. 2025
Roman will not only revolutionize our understanding of dark matter and dark energy, it is expected to add 100,000 planets to our census.
—Josh Dinner, Space.com, 6 Oct. 2025
Astronomers combine these measurements with other dark energy and matter distribution studies, including the Dark Energy Survey (DES) measurements of distant supernovae and maps of the cosmic microwave background light left over from the dawn of the universe.
—Rebecca Boyle, Scientific American, 4 Oct. 2025
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.
Big Think, 17 Oct. 2025
Scientists know even less about dark energy, which makes up the remaining 68% of the universe.
—Eric Lagatta, USA Today, 13 Oct. 2025
Roman will not only revolutionize our understanding of dark matter and dark energy, it is expected to add 100,000 planets to our census.
—Josh Dinner, Space.com, 6 Oct. 2025
Astronomers combine these measurements with other dark energy and matter distribution studies, including the Dark Energy Survey (DES) measurements of distant supernovae and maps of the cosmic microwave background light left over from the dawn of the universe.
—Rebecca Boyle, Scientific American, 4 Oct. 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 20 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share