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What is dark energy & why is it important?
What percentage of the universe is dark energy?
When was dark energy first discovered?
What is the density of dark energy?
In physical cosmology and astronomy, dark energy is an unknown form of energy that affects the universe on the largest scales. Its primary effect is to drive the accelerating expansion of the universe.
Feb 5, 2024 · Dark energy is an unknown force that makes the universe expand faster over time. Learn about its history, discovery, and possible explanations from NASA Science.
Nov 24, 2022 · Dark energy is a hypothetical form of energy that is proposed by physicists to explain why the universe is not just expanding but is doing so at an accelerating rate. Think of dark energy...
4 days ago · Dark energy is a repulsive force that dominates the universe and accelerates its expansion. Learn about its nature, history, and detection methods from Britannica, an authoritative source of science information.
- Adam Riess
Matter is defined as any substance that has mass and occupies space. But there’s more to the universe than the matter we can see. Dark matter and dark energy are mysterious substances that affect and shape the cosmos, and scientists are still trying to figure them out. Learn more.
Dark energy, meanwhile, is the name we give the mysterious influence driving the accelerated expansion of the universe. What these substances are and how they work are some of the major challenges facing modern astronomers.
