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 Big Bang theory, along with Einstein's general relativity, has successfully explained major cosmological phenomena, including the cosmic microwave background, the universe's large-scale structure, and its accelerating expansion often linked to dark energy.
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Victoria Corless, Space.com, 24 June 2025
By detecting millions of supernovas — far beyond the handful historically observed in our galaxy — the LSST will refine the timeline of cosmic expansion and offer vital clues to the nature of dark energy.
—Jamie Carter, Forbes.com, 23 June 2025
Dark matter and dark energy make up most of the universe.
—Ashley Strickland, CNN Money, 16 June 2025
Dark matter and dark energy might also influence how these galactic giants interact, but those effects aren’t well understood, per National Geographic.
—Elizabeth Gamillo, Smithsonian Magazine, 4 June 2025
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Victoria Corless, Space.com, 24 June 2025
By detecting millions of supernovas — far beyond the handful historically observed in our galaxy — the LSST will refine the timeline of cosmic expansion and offer vital clues to the nature of dark energy.
—Jamie Carter, Forbes.com, 23 June 2025
Dark matter and dark energy make up most of the universe.
—Ashley Strickland, CNN Money, 16 June 2025
Dark matter and dark energy might also influence how these galactic giants interact, but those effects aren’t well understood, per National Geographic.
—Elizabeth Gamillo, Smithsonian Magazine, 4 June 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 2 Jul. 2025.
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